**Numbers n where n^2 divides A159553(n), where A159553(n) = sum{k=0 to n} binomial(n,k) * GCD(n,k).**

*1, 6, 22, 72, 114, 148, 164, 260, 261, 780, 1078, 1184, 1266, 2952, 467*

*2 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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