A060497 a(n) = binomial(2^n, prime(n)).

1, 4, 56, 11440, 129024480, 13136858812224, 614965786737727286400, 23665616042362569982121184000, 4818341997044953599090397918009939136000, 150781781287041846344613980638793530715139659227762775040

Offset

1,2

Links

Harry J. Smith, Table of n, a(n) for n = 1..31

Example

n = 4, a(4) = binomial(16,7) = binomial(2^4, p(4)) = 11440.

Prog

(PARI) a(n) = { binomial(2^n, prime(n)) } \\ Harry J. Smith, Jul 06 2009

Crossrefs

Cf. A014070, A006516.

Sequence in context: A000315 A080984 A071579 * A092273 A193745 A181437

Adjacent sequences: A060494 A060495 A060496 * A060498 A060499 A060500

Keyword

easy,nonn

Author

Labos Elemer, Apr 11 2001

Status

approved