US News

Palin punches back

Sarah Palin wants her nemesis David Letterman to keep zinging her memoir — because it sells books.

Letterman has been blasting “Going Rogue” almost every night, with skits like “Things More Fun Than Reading the Sarah Palin Memoir.”

The 2008 GOP vice-presidential nominee, who has feuded with Letterman for months, told Barbara Walters she wouldn’t go on his show.

“I don’t think that I’d want to boost his ratings,” she said, but added, “I do want him to sell my book, though, so I hope he keeps it up.”

Segments of the Palin-Walters interview begin airing on ABC today, following Palin’s appearance with Oprah Winfrey yesterday.

Much of the Oprah show was devoted to Palin’s thoughts on Levi Johnston, her former son-in-law-to-be.

It’s “heartbreaking to see the road he’s on right now,” she said. “It’s not a healthy place to be.”

She insisted she didn’t want to respond to Johnston’s “many untruths” — such as his claim she’s a bad parent, has a troubled marriage and doesn’t even attend her kids’ hockey games.

“We don’t want to mess up the gig he’s doing: aspiring porn,” Palin joked, alluding to the 19-year-old Johnston’s decision to pose for Playgirl.

“By the way,” she added to get in another zinger, “I don’t know if we call him Levi. I hear he goes by the name ‘Ricky Hollywood’ now.”

“He’s a teenager,” Palin said of the one-time fiancé of daughter Bristol Palin.

“I don’t think he realizes quite yet what it is that he is being handled and orchestrated around.”

Palin said she prays for Johnston and that he has an “open invitation” to Thanksgiving dinner.

“He’s family,” she said.

Palin’s remarks for the baby-daddy of her grandson, Tripp, came as her publicity push for “Going Rogue” went into high gear.

The 413-page book, already an Amazon.com best seller, was released yesterday and Palin begins a book tour today.

“[Johnston’s] quite busy with his media tours and he hasn’t seen the baby for a while,” Palin said. “But we will let that be the discussion between Bristol and Levi as they work out their relationship.”

Winfrey began the hourlong interview by asking Palin if she was upset when she wasn’t invited to her TV show during the election campaign.

“No offense to you, but it wasn’t the center of my universe,” Palin replied.

Winfrey also asked Palin, 45, if she was thinking about running for president in 2012.

“It’s not on my radar screen right now,” Palin said. “In 2012, Trigg heads to kindergarten and I’m focused on that.”

The former Alaska governor also took more shots at Katie Couric for the way the CBS anchorwoman treated her during the campaign.

andy.soltis@nypost.com