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 A254046 Column index of n in A191450: a(3n) = 1, a(3n+1) = 1, a(3n+2) = 1 + a(n+1). 10
 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 5, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 2, 1, 1, 2, 1, 1, 6, 1, 1, 2, 1, 1, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Equally, the row index of n in A254051. a(n) is the 3-adic valuation of A087289(n-1). - Fred Daniel Kline, Jan 11 2017 LINKS Antti Karttunen, Table of n, a(n) for n = 1..9842 FORMULA a(3n) = 1, a(3n+1) = 1, a(3n+2) = 1 + a(n+1). a(n) = A253786(n) + 1. a(n) = A253786(3n-1). - Cyril Damamme, Aug 04 2015 a(n) = A051064(2n-1), i.e., the 3-adic valuation of 6n-3. - Cyril Damamme, Aug 04 2015 PROG (Scheme, with memoization-macro definec) (definec (A254046 n) (if (= 2 (modulo n 3)) (+ 1 (A254046 (/ (+ 1 n) 3))) 1)) CROSSREFS One more than A253786. Cf. A253887 (the corresponding row index). Cf. A191450, A254047, A254051, A254052. Odd bisection of A051064. Cf. A087289. Sequence in context: A098824 A181651 A124032 * A137457 A275699 A305633 Adjacent sequences:  A254043 A254044 A254045 * A254047 A254048 A254049 KEYWORD nonn AUTHOR Antti Karttunen, Jan 24 2015 STATUS approved

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Last modified May 11 19:29 EDT 2021. Contains 343808 sequences. (Running on oeis4.)