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A024384
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a(n) = s(1)*s(2)*...*s(n+1)*(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c = (-1)^(n+1) and s(k) = 4k-3 for k = 1,2,3,...
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0
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0, 1, 4, 97, 1064, 32289, 598380, 22574145, 593534160, 26957380545, 920377787220
(list; graph; refs; listen; history; internal format)
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