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 A115861 Number of distinct m's < n, such that there exists nonzero solutions to a cross-domain congruence m*i = n X i. 4
 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 1, 1, 2, 0, 2, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 2, 2, 0, 1, 1, 0, 1, 1, 1, 4, 1, 1, 2, 3, 0, 3, 2, 3, 0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 2, 1, 2, 1, 3, 0, 1, 1, 2, 1, 1, 1, 2, 1, 2, 0, 4, 2, 2, 2, 2, 0, 1, 1, 4, 1, 2, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,23 LINKS CROSSREFS a(2n) = a(n). Cf. A115859, A115869, A115871. Sequence in context: A333809 A306440 A025905 * A282355 A199322 A284203 Adjacent sequences:  A115858 A115859 A115860 * A115862 A115863 A115864 KEYWORD nonn AUTHOR Antti Karttunen, Feb 07 2006 STATUS approved

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Last modified December 7 15:24 EST 2021. Contains 349581 sequences. (Running on oeis4.)