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A028368
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a(n) = (Product_{j=1..n-1} (2^j-1)) * 2^binomial(n+1,2).
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0
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1, 2, 8, 192, 21504, 10321920, 20478689280, 165140150353920, 5369036568306647040, 700981414358115837542400, 366798338802685125615786393600, 768480666818860817418136536376934400
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OFFSET
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0,2
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LINKS
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Table of n, a(n) for n=0..11.
I. Strazdins, Universal affine classification of Boolean functions, Acta Applic. Math. 46 (1997), 147-167.
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FORMULA
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a(n) ~ c * 2^(n^2), where c = A048651 = 0.288788095... - Vaclav Kotesovec, Oct 27 2017
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MATHEMATICA
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Table[Product[2^j - 1, {j, 1, n-1}] * 2^(n*(n+1)/2), {n, 0, 12}] (* Vaclav Kotesovec, Oct 27 2017 *)
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CROSSREFS
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Cf. A005329.
Sequence in context: A156526 A009505 A305737 * A056990 A234637 A234632
Adjacent sequences: A028365 A028366 A028367 * A028369 A028370 A028371
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane.
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STATUS
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approved
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