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 A083925 Inverse function of N -> N injection A057548. 7
 0, 0, 0, 1, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 0, 6, 7, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 10, 0, 11, 12, 13, 0, 0, 0, 14, 15, 0, 16, 17, 18, 0, 19, 20, 21, 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 COMMENTS a(1)=0 because A057548(0)=1, but a(n) = 0 also for those n which do not occur as values of A057548. All positive natural numbers occur here once. LINKS Table of n, a(n) for n=0..98. FORMULA a(n) = A083923(n)*A072771(n). CROSSREFS a(A057548(n)) = n for all n. Cf. A083926-A083929, A083935. Sequence in context: A013504 A230807 A173012 * A208150 A045830 A078771 Adjacent sequences: A083922 A083923 A083924 * A083926 A083927 A083928 KEYWORD nonn AUTHOR Antti Karttunen, May 13 2003 STATUS approved

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Last modified August 3 05:17 EDT 2024. Contains 374875 sequences. (Running on oeis4.)