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 A071325 Number of squares > 1 dividing n. 6
 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 2, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 3, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 1, 1, 0, 0, 0, 2, 2, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,16 LINKS Antti Karttunen, Table of n, a(n) for n = 1..1000 FORMULA a(n) = A046951(n) - 1. A057427(a(n)) = 1 - A008966(n). G.f.: Sum_{k>=2} x^(k^2)/(1 - x^(k^2)). - Ilya Gutkovskiy, Jan 04 2017 PROG (PARI) a(n) = sumdiv(n, d, issquare(d) && (d>1)); \\ Michel Marcus, Jan 04 2017 CROSSREFS Cf. A008966, A046951, A057427. Sequence in context: A322338 A158971 A121467 * A064727 A112378 A324832 Adjacent sequences:  A071322 A071323 A071324 * A071326 A071327 A071328 KEYWORD nonn AUTHOR Reinhard Zumkeller, May 18 2002 STATUS approved

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Last modified April 13 01:36 EDT 2021. Contains 342934 sequences. (Running on oeis4.)