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

1, 2, 720, 87178291200, 265252859812191058636308480000000, 31469973260387937525653122354950764088012280797258232192163168247821107200000000000000

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Links

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

Crossrefs

Cf. A028366.

Programs

Magma

[Factorial(2^n-2): n in [1..7]]; // Vincenzo Librandi, Jan 05 2020

Mathematica

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

PARI

a(n) = (2^n-2)!; \\ Michel Marcus, Jan 04 2020

Extensions

Offset corrected by Sean A. Irvine, Jan 03 2020