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A022946 a(n) = a(n-1) + c(n) for n >= 3, a( ) increasing, given a(1)=1 a(2)=2; where c( ) is complement of a( ). 2
1, 2, 7, 13, 21, 30, 40, 51, 63, 77, 92, 108, 125, 143, 162, 182, 204, 227, 251, 276, 302, 329, 357, 386, 417, 449, 482, 516, 551, 587, 624, 662, 701, 742, 784, 827, 871, 916, 962, 1009, 1057, 1106, 1156, 1208, 1261, 1315, 1370, 1426, 1483, 1541 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

MATHEMATICA

Fold[Append[#1, #1[[-1]] + Complement[Range[Max@#1 + 3], #1][[#2]]] &, {1, 2}, Range[3, 50]] (* Ivan Neretin, Apr 04 2016 *)

CROSSREFS

Cf. A005228 and references therein.

Sequence in context: A155212 A346870 A106675 * A184428 A262523 A010895

Adjacent sequences:  A022943 A022944 A022945 * A022947 A022948 A022949

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified December 6 20:22 EST 2021. Contains 349567 sequences. (Running on oeis4.)