A061591 a(n) = 2^x, where x = p*(p-1)/2 and p is the n-th prime.

2, 8, 1024, 2097152, 36028797018963968, 302231454903657293676544, 87112285931760246646623899502532662132736, 2993155353253689176481146537402947624255349848014848

Offset

1,1

Links

Harry J. Smith, Table of n, a(n) for n = 1..22

Mathematica

Table[2^((p(p-1))/2), {p, Prime[Range[10]]}] (* Harvey P. Dale, Sep 03 2024 *)

Prog

(PARI) { n=0; forprime (p=2, prime(22), write("b061591.txt", n++, " ", 2^(p*(p - 1)/2)) ) } \\ Harry J. Smith, Jul 25 2009

Crossrefs

Cf. A007955, A006308. The exponents x are in A008837.

Sequence in context: A004491 A132573 A322142 * A103085 A084148 A014115

Adjacent sequences: A061588 A061589 A061590 * A061592 A061593 A061594

Keyword

nonn

Author

Labos Elemer, May 22 2001

Extensions

Offset changed from 2 to 1 by Harry J. Smith, Jul 25 2009

Status

approved