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 A272800 Flavius Josephus factor of n. 1
 0, 2, 0, 2, 3, 2, 0, 2, 4, 2, 3, 2, 0, 2, 5, 2, 3, 2, 0, 2, 4, 2, 3, 2, 6, 2, 0, 2, 3, 2, 7, 2, 4, 2, 3, 2, 5, 2, 0, 2, 3, 2, 8, 2, 4, 2, 3, 2, 0, 2, 6, 2, 3, 2, 5, 2, 4, 2, 3, 2, 9, 2, 0, 2, 3, 2, 10, 2, 4, 2, 3, 2, 7, 2, 5, 2, 3, 2, 0, 2, 4, 2, 3, 2, 6, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This sequence is analogous to the smallest prime factor of n. If n is a member of A000960, a(n) = 0, otherwise a(n) = the (k+1)-st step that rejects n from Flavius Josephus' sieve. The n-values of records of this sequence are given by A100287 (see 2004 comment by Sloane). LINKS Danny Rorabaugh, Table of n, a(n) for n = 1..1000 PROG (Sage) # Function that returns an array of the first n terms. def A272800(n):     A, B, k = [0]*n, range(n), 1     while k

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Last modified September 20 03:44 EDT 2020. Contains 337264 sequences. (Running on oeis4.)