**Numbers n such that sigma(n) = sigma(n+1) - sigma(n-1).**

*2, 3, 23, 1967, 3263, 5015, 60455, 1016507, 4420163, 12055511, 14365607*

*1 seqfan posts*

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

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