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 A283994 a(1) = 0, and for n > 1, a(n) = position of Stern polynomial B(n,x) among the irreducible/reducible Stern polynomials. 3
 0, 1, 2, 1, 3, 2, 4, 3, 4, 5, 5, 6, 6, 7, 8, 9, 7, 10, 8, 11, 12, 13, 9, 14, 10, 15, 16, 17, 11, 18, 12, 19, 20, 21, 22, 23, 13, 24, 25, 26, 14, 27, 15, 28, 29, 30, 16, 31, 32, 33, 34, 35, 17, 36, 18, 37, 38, 39, 19, 40, 20, 41, 42, 43, 21, 44, 22, 45, 46, 47, 23, 48, 24, 49, 50, 51, 25, 52, 26, 53, 54, 55, 27, 56, 57, 58, 59, 60, 28, 61, 29, 62, 63, 64, 30 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Each n > 0 occurs exactly twice. LINKS Antti Karttunen, Table of n, a(n) for n = 1..10001 FORMULA If A283991(n) = 1 then a(n) = A283992(n), otherwise a(n) = A283993(n). PROG (Scheme) (define (A283994 n) (if (= 1 (A283991 n)) (A283992 n) (A283993 n))) CROSSREFS Cf.  A125184, A260443, A283991, A283992, A283993. Cf. also A066136. Sequence in context: A188901 A171618 A253138 * A026238 A066136 A257902 Adjacent sequences:  A283991 A283992 A283993 * A283995 A283996 A283997 KEYWORD nonn AUTHOR Antti Karttunen, Mar 20 2017 STATUS approved

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Last modified January 25 07:53 EST 2020. Contains 331241 sequences. (Running on oeis4.)