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A303445 Expansion of Product_{k>=1} ((1 + (8^k*x)^k)/(1 - (8^k*x)^k))^(1/8^k). 2
1, 2, 130, 524588, 137440010582, 2305843284159782076, 2475880083182464573602036628, 170141183465420992188660515119769982616, 748288838313762576487529438443476930331940262147046 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..33

FORMULA

a(n) ~ 2^(3*n^2 - 3*n + 1). - Vaclav Kotesovec, Apr 25 2018

PROG

(PARI) N=20; x='x+O('x^N); Vec(prod(k=1, N, ((1+(8^k*x)^k)/(1-(8^k*x)^k))^(1/8^k)))

CROSSREFS

Cf. A303440, A303444.

Sequence in context: A098533 A182421 A218434 * A158110 A117626 A142251

Adjacent sequences:  A303442 A303443 A303444 * A303446 A303447 A303448

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Apr 24 2018

STATUS

approved

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Last modified February 27 09:24 EST 2020. Contains 332301 sequences. (Running on oeis4.)