A141132 a(n) = prime(prime(prime(prime(A028815(n) - 1) - 1) - 1) - 1) - 1.

1, 2, 36, 576, 1492, 4512, 8110, 14778, 18222, 26416, 41452, 51576, 71740, 87552, 96352, 111372, 135660, 167106, 172152, 218550, 238990, 250252, 284148, 317856, 351706, 400408, 441478, 463398, 490246, 505780, 527280, 643990, 679036, 718182

Offset: 0

Author

Juri-Stepan Gerasimov, Jul 31 2008

Keywords

• nonn

Links

• G. C. Greubel, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A000040, A028815, A141130, A141133, A141136, A141138.

Programs

Magma

p:=NthPrime;
A141132:= func< n | n eq 0 select 1 else p(p(p(p(p(n))-1)-1)-1)-1 >;
[A141132(n): n in [0..50]]; // G. C. Greubel, Aug 05 2024

Mathematica

A141132[n_]:= With[{p=Prime}, If[n==0, 1, p[p[p[p[p[n]]-1]-1]-1]-1 ]];
Table[A141132[n], {n, 0, 60}] (* G. C. Greubel, Aug 05 2024 *)

SageMath

p=nth_prime
def A141132(n): return 1 if n==0 else p(p(p(p(p(n))-1)-1)-1)-1
[A141132(n) for n in range(51)] # G. C. Greubel, Aug 05 2024

Formula

a(n) = prime(prime(prime(prime(prime(n)) - 1) - 1) - 1) - 1, with a(0) = 1. - G. C. Greubel, Aug 05 2024

Extensions

Extended by D. S. McNeil, Mar 21 2009

Offset changed by G. C. Greubel, Aug 05 2024