A096353 Integer part of the logarithmic integral of the logarithmic integral of 10^n.

4, 13, 45, 212, 1205, 7754, 54033, 397820, 3049439, 24107782, 195301124, 1613855392, 13556782136, 115465571163, 995112789441, 8663956923566, 76105986001922, 673776966100254, 6006525932517904, 53878729432248978

Offset

1,1

Links

Table of n, a(n) for n=1..20.

Prog

(PARI) \p 100 f(n) = for(x=1, n, print1(floor(Li(Li(10^x)))", ")) Li(x) = { -eint1(log(1/x)) }

Crossrefs

Sequence in context: A149432 A155397 A155328 * A034553 A320743 A104460

Adjacent sequences: A096350 A096351 A096352 * A096354 A096355 A096356

Keyword

nonn

Author

Cino Hilliard, Jun 30 2004

Status

approved