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 A183213 Ordering of the numbers in the set S generated by these rules: 1 is in S, and if n is in S, then floor[(3n-1)/2] and 3n are in S. 3
 1, 3, 4, 5, 7, 9, 10, 12, 13, 14, 15, 17, 19, 20, 21, 22, 25, 27, 28, 29, 30, 31, 32, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 51, 53, 55, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 70, 75, 76, 79, 81, 82, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 100, 101, 104, 108, 111, 112, 113, 117, 118, 120, 121, 122, 123, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This sequence results from flattening and sorting the tree at A183211. Complement of A178931, obtained from the tree at A183212. LINKS Ivan Neretin, Table of n, a(n) for n = 1..10000 FORMULA (See the Mathematica code.) MATHEMATICA nn=200; t={1}; t0=t; While[t=Select[Union[t, Floor[(3*t-1)/2], 3*t], #<=nn &]; t0 != t, t0=t]; t f[s_List] := Select[ Union@ Join[s, Floor[(3 s - 1)/2], 3 s], # < 201 &]; NestWhile[f, {1}, UnsameQ, All] CROSSREFS Cf. A183211, A178931. Sequence in context: A213637 A047251 A258932 * A183172 A136495 A184419 Adjacent sequences: A183210 A183211 A183212 * A183214 A183215 A183216 KEYWORD nonn AUTHOR Clark Kimberling, Dec 30 2010 STATUS approved

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Last modified February 23 19:35 EST 2024. Contains 370283 sequences. (Running on oeis4.)