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 A091009 Number of triples (u,v,w) of divisors of n with v-u = w-v, and u < v < w. 9
 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 3, 0, 0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 5, 0, 0, 0, 1, 0, 4, 0, 0, 0, 0, 0, 6, 0, 0, 0, 1, 0, 2, 0, 0, 3, 0, 0, 7, 0, 0, 0, 0, 0, 3, 0, 2, 0, 0, 0, 11, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 10, 0, 0, 2, 0, 0, 2, 0, 2, 0, 0, 0, 9, 0, 0, 0, 0, 0, 10, 1, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,12 COMMENTS a(A091014(n))=n and a(m)<>n for m<=A091014(n); a(A091010(n))=0; a(A091011(n))>0; a(A091012(n))=1; a(A091013(n))>1. Number of pairs (x,y) of divisors of n with x

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Last modified May 14 03:51 EDT 2021. Contains 343872 sequences. (Running on oeis4.)