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 A290080 a(1) = 0; for n > 1, a(n) = sigma(bigomega(n)). 3
 0, 1, 1, 3, 1, 3, 1, 4, 3, 3, 1, 4, 1, 3, 3, 7, 1, 4, 1, 4, 3, 3, 1, 7, 3, 3, 4, 4, 1, 4, 1, 6, 3, 3, 3, 7, 1, 3, 3, 7, 1, 4, 1, 4, 4, 3, 1, 6, 3, 4, 3, 4, 1, 7, 3, 7, 3, 3, 1, 7, 1, 3, 4, 12, 3, 4, 1, 4, 3, 4, 1, 6, 1, 3, 4, 4, 3, 4, 1, 6, 7, 3, 1, 7, 3, 3, 3, 7, 1, 7, 3, 4, 3, 3, 3, 12, 1, 4, 4, 7, 1, 4, 1, 7, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS Antti Karttunen, Table of n, a(n) for n = 1..10000 FORMULA a(1) = 0; for n > 1, a(n) = A000203(A001222(n)). a(n) = A193511(n) + A193512(n). PROG (Scheme) (define (A290080 n) (if (= 1 n) 0 (A000203 (A001222 n)))) CROSSREFS Cf. A000203, A001222, A193511, A193512. Differs from A289617 for the first time at n=32, where a(n) = 6, while A289617(32) = 8. Sequence in context: A335552 A306841 A095660 * A289617 A035648 A322821 Adjacent sequences: A290077 A290078 A290079 * A290081 A290082 A290083 KEYWORD nonn AUTHOR Antti Karttunen, Jul 23 2017 STATUS approved

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Last modified March 24 19:07 EDT 2023. Contains 361510 sequences. (Running on oeis4.)