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A158506
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Determinants of n-times-n matrices M of the form M[i,j] = 2^(i*j).
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0
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2, 16, 3072, 66060288, 681869007912960, 13963783542711369125068800, 2305981313752949175455638153064349696000, 12380897999371387785024422461502386865911933091803299840000
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n)=2^((1/6)*n*(n+1)*(n+2))*product(product(2^p-1, p = 1..l), l = 1..n-1).
a(n) ~ c * QPochhammer(1/2)^n * 2^(n*(2*n^2 + 3*n + 1)/6), where c = 10.032129775337715051413862095841451215826928327290198829... - Vaclav Kotesovec, Apr 17 2018
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MAPLE
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a(n) := 2^((1/6)*n*(n+1)*(n+2))*mul(mul(2^p-1, p = 1..l), l = 1..n-1):
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MATHEMATICA
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Table[2^(n*(n+1)*(n+2)/6) * Product[Product[2^p-1, {p, 1, m}], {m, 1, n-1}], {n, 1, 10}] (* Vaclav Kotesovec, Apr 17 2018 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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P. Dunin-Barkowski, A. Sleptsov (elandread(AT)yandex.ru), Mar 20 2009
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STATUS
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approved
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