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 A265859 Unluckiness of n. 4
 0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 3, 1, 0, 1, 2, 1, 0, 1, 4, 1, 2, 1, 0, 1, 0, 1, 2, 1, 0, 1, 3, 1, 2, 1, 0, 1, 5, 1, 2, 1, 0, 1, 0, 1, 2, 1, 6, 1, 4, 1, 2, 1, 3, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 0, 1, 3, 1, 2, 1, 7, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS If n is lucky, a(n)=0; if n is unlucky, a(n) is the step at which n is rejected from the lucky number sieve. LINKS Max Barrentine, Table of n, a(n) for n = 1..10000 FORMULA a(n) = (1-A145649(n)) * A260438(n). - Antti Karttunen, Sep 11 2016, corrected Nov 15 2019 PROG (Scheme) (define (A265859 n) (* (- 1 (A145649 n)) (A260438 n))) ;; Antti Karttunen, Sep 11 2016 CROSSREFS Cf. A000959, A050505, A145649, A260437, A260438. Cf. also arrays A255543, A255545. Cf. A271420 (analogous sequence). Sequence in context: A257260 A334208 A159195 * A271420 A099313 A316491 Adjacent sequences:  A265856 A265857 A265858 * A265860 A265861 A265862 KEYWORD nonn AUTHOR Max Barrentine, Dec 17 2015 STATUS approved

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Last modified June 15 17:41 EDT 2021. Contains 345049 sequences. (Running on oeis4.)