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 A181426 Numerator of Sum[ k^4, {k,1,n} ] / Product[ k^4, {k,1,n} ]. 0

%I

%S 1,17,49,59,979,91,167,731,5111,517,1817,6071,109,18241,22289,2771,

%T 131,28823,67,51619,11911,34891,15557,257,1949,22313,2267,14123,

%U 153931,5273999,1,3167,45091,3569,268309,126947,4217,127,369641,201679,85739

%N Numerator of Sum[ k^4, {k,1,n} ] / Product[ k^4, {k,1,n} ].

%C a(n) = 1 for n = {1, 31, 59, 94, 104, 122, 133, 181, 206, 223, ...} = A166604.

%t Table[ Numerator[ Sum[ k^4, {k, 1, n} ] / Product[ k^4, {k, 1, n} ] ], {n, 1, 100} ]

%Y Cf. A090585 = Numerator of Sum/Product of first n numbers.

%Y Cf. A125294 = Numerator of Sum[ k^2, {k, 1, n} ] / Product[ k^2, {k, 1, n} ].

%Y Cf. A166604.

%K nonn

%O 1,2

%A _Alexander Adamchuk_, Oct 18 2010

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Last modified March 19 17:21 EDT 2019. Contains 321330 sequences. (Running on oeis4.)