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 A191288 Increasing sequence generated by these rules: 1 is in a, and if x is in a then 2x and floor((x^2)/3) are in a. 2
 0, 1, 2, 4, 5, 8, 10, 16, 20, 21, 32, 33, 40, 42, 64, 66, 80, 84, 85, 128, 132, 133, 147, 160, 168, 170, 256, 264, 266, 294, 320, 336, 340, 341, 363, 512, 528, 532, 533, 588, 640, 672, 680, 682, 726, 1024, 1056, 1064, 1066, 1176, 1280, 1344, 1360, 1364, 1365, 1452, 2048, 2112, 2128, 2132, 2133, 2352, 2408, 2560, 2688, 2720 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS See A191203. LINKS Ivan Neretin, Table of n, a(n) for n = 1..10000 EXAMPLE 1 -> {0,2} -> 4 -> {5,8} -> {10,16,21} -> ... MATHEMATICA g=13; Union[Flatten[NestList[{2#, Floor[(#^2)/3]}&, 1, g]]] (* A191288; use g>12 to get all of first 60 terms *) CROSSREFS Cf. A191203. Sequence in context: A191203 A216686 A114652 * A181666 A067943 A067937 Adjacent sequences:  A191285 A191286 A191287 * A191289 A191290 A191291 KEYWORD nonn AUTHOR Clark Kimberling, May 29 2011 EXTENSIONS Definition corrected by Han Guoniu, Oct 11 2012 STATUS approved

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Last modified January 20 16:27 EST 2022. Contains 350472 sequences. (Running on oeis4.)