A028366 a(n) = (2^n - 1)!.

1, 1, 6, 5040, 1307674368000, 8222838654177922817725562880000000, 1982608315404440064116146708361898137544773690227268628106279599612729753600000000000000

Offset

0,3

Links

Table of n, a(n) for n=0..6.

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

Mathematica

(2^Range[0, 6] - 1)! (* Alonso del Arte, Dec 24 2016 *)

Prog

(PARI) for(n=0, 10, print1((2^n -1)!, ", ")) \\ G. C. Greubel, Dec 25 2016

Crossrefs

Cf. A000142, A000225.

Sequence in context: A226499 A343096 A066061 * A305886 A115431 A116117

Adjacent sequences: A028363 A028364 A028365 * A028367 A028368 A028369

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved