**Let n = abc..., where a, b, c, are digits of n. a(n) = a*bc...+b*ac...+c*ab...+..., i.e. a(n) = sum, over all the digits, of the product (number obtained by deleting a digit multiplied by the deleted digit).**

*0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 0, 4, 8, 12, 16, 20, 24, 28, 32*

*1 seqfan posts*

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

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