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A025538
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a(n) = (1/s(0) - 1/s(1) + ... + d/s(n))*LCM{C(0,0),C(1,0),...,C(n,0)}, where d = (-1)^n, s = A002944, i.e. s(k) = LCM of row k+1 of Pascal's triangle.
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0
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1, 0, 1, 1, 3, 9, 10, 66, 135, 395, 396, 4344, 4345, 56471, 56486, 56478, 112957, 1920251, 1920252, 36484768, 36484789, 36484767, 36484768, 839149640, 839149645, 4195748199, 4195748208, 12587244596, 12587244597, 365030093283, 365030093284
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