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A191289 Increasing sequence generated by these rules:  a(1)=1, and if x is in a then 3x-1 and x^2 are in a. 2
1, 2, 4, 5, 11, 14, 16, 25, 32, 41, 47, 74, 95, 121, 122, 140, 196, 221, 256, 284, 362, 365, 419, 587, 625, 662, 767, 851, 1024, 1085, 1094, 1256, 1681, 1760, 1874, 1985, 2209, 2300, 2552, 3071, 3254, 3281, 3767, 5042, 5279, 5476, 5621, 5954, 6626, 6899, 7655, 9025, 9212, 9761, 9842, 11300, 14641, 14884, 15125, 15836 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A191203.

LINKS

Ivan Neretin, Table of n, a(n) for n = 1..10000

EXAMPLE

1 -> 2 -> 4,5 -> 11,14,16,25 ->

MATHEMATICA

g = 11; Union[Flatten[NestList[{-1 + 3 #, #^2} &, 1, g]]]

(* A191289; use g>9 to get all of first 60 terms *)

CROSSREFS

Cf. A191203.

Sequence in context: A292412 A113733 A294434 * A256570 A284427 A089416

Adjacent sequences:  A191286 A191287 A191288 * A191290 A191291 A191292

KEYWORD

nonn

AUTHOR

Clark Kimberling, May 29 2011

STATUS

approved

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Last modified August 9 05:12 EDT 2020. Contains 336319 sequences. (Running on oeis4.)