|
%I #14 Sep 08 2022 08:45:11
%S 0,4,22,129,847,5968,43934,334349,2607165,20700806,166677978,
%T 1357200840,11152818693,92349038518,769616513836,6449247674296,
%U 54301968156067,459127968423610,3896275288090795,33173029388942512,283263365236063678,2425147728864084536,20812271380294281933,178994690348530706578,1542475966907198337529
%N Number of primes < 9^n.
%F a(n) = A055729(2n). - _R. J. Mathar_, Sep 15 2012
%t Table[PrimePi[9^n], {n, 0, 14}] (* _Michael De Vlieger_, Mar 17 2015 *)
%o (Magma) [#PrimesUpTo(9^n): n in [0..9] ]; // _Vincenzo Librandi_, Mar 17 2015
%o (Sage) [prime_pi(n) for n in (1..14)] # _Bruno Berselli_, Mar 17 2015
%Y Cf. A000720.
%K nonn
%O 0,2
%A _Cino Hilliard_, Jul 28 2003
%E a(11)-a(24) added by _David Baugh_, Mar 17 2015
|
