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 A268231 Indices of 1's in A047999. 3
 0, 1, 2, 3, 5, 6, 7, 8, 9, 10, 14, 15, 16, 19, 20, 21, 23, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 44, 45, 46, 53, 54, 55, 57, 63, 65, 66, 67, 68, 69, 74, 75, 76, 77, 78, 82, 86, 90, 91, 92, 95, 96, 99, 100, 103, 104, 105, 107, 109, 111, 113, 115, 117, 119, 120, 121, 122, 123, 124, 125, 126, 127 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Ivan Neretin, Table of n, a(n) for n = 1..10000 MATHEMATICA Flatten@Position[Flatten@NestList[Mod[Append[#, 0] + Prepend[#, 0], 2] &, {1}, 15], 1] - 1 (* Ivan Neretin, Dec 19 2017 *) CROSSREFS Cf. A047999, A268232. Sequence in context: A288315 A285980 A357304 * A039167 A247360 A145397 Adjacent sequences: A268228 A268229 A268230 * A268232 A268233 A268234 KEYWORD nonn AUTHOR N. J. A. Sloane, Feb 03 2016 STATUS approved

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Last modified March 24 15:06 EDT 2023. Contains 361479 sequences. (Running on oeis4.)