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A028371 a(n) = (2^(n-1)-1)!*2^((2^(n-1)-1)-1). 2
1, 24, 322560, 21424936845312000, 8829205774994708066835865418197893120000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 2..9

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

FORMULA

a(n) = A002866(2^(n-1)-1).

PROG

(MAGMA) [(Factorial(2^(n-1)-1))*2^((2^(n-1)-1)-1): n in [2..8]]; // Vincenzo Librandi, Jun 03 2011

CROSSREFS

Cf. A002866.

Sequence in context: A173172 A061526 A159422 * A013774 A088020 A289746

Adjacent sequences:  A028368 A028369 A028370 * A028372 A028373 A028374

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 28 18:42 EDT 2021. Contains 347717 sequences. (Running on oeis4.)