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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
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
Sequence in context: A213637 A047251 A258932 * A183172 A136495 A184419
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.)