A028367 a(n) = (2^n-2)!.

1, 2, 720, 87178291200, 265252859812191058636308480000000, 31469973260387937525653122354950764088012280797258232192163168247821107200000000000000

Offset

1,2

Links

Table of n, a(n) for n=1..6.

I. Strazdins, Universal affine classification of Boolean functions, Acta Applic. Math. 46 (1997), 147-167.

Mathematica

Table[(2^n - 2)!, {n, 7}] (* Vincenzo Librandi, Jan 05 2020 *)

Prog

(PARI) a(n) = (2^n-2)!; \\ Michel Marcus, Jan 04 2020
(Magma) [Factorial(2^n-2): n in [1..7]]; // Vincenzo Librandi, Jan 05 2020

Crossrefs

Cf. A028366.

Sequence in context: A185667 A119781 A362187 * A000197 A036298 A341078

Adjacent sequences: A028364 A028365 A028366 * A028368 A028369 A028370

Keyword

nonn

Author

N. J. A. Sloane

Extensions

Offset corrected by Sean A. Irvine, Jan 03 2020

Status

approved