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A022944 a(n) = a(n-2) + c(n-1) for n >= 3, a( ) increasing, given a(1)=2, a(2)=4; where c( ) is complement of a( ). 2
2, 4, 5, 10, 12, 18, 21, 29, 34, 43, 49, 59, 66, 78, 86, 100, 109, 124, 134, 150, 161, 178, 191, 209, 223, 242, 258, 278, 295, 316, 334, 356, 375, 398, 419, 443, 465, 490, 513, 540, 564, 592, 617, 646, 672, 702, 729, 760, 789, 821, 851, 884, 915 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

Fold[Append[#1, #1[[-2]] + Complement[Range[Max@#1 + 2], #1][[#2]]] &, {2, 4}, Range[2, 52]] (* Ivan Neretin, Apr 05 2016 *)

CROSSREFS

Cf. A005228 and references therein.

Sequence in context: A120491 A177186 A260385 * A241822 A133732 A128215

Adjacent sequences:  A022941 A022942 A022943 * A022945 A022946 A022947

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 20 15:44 EDT 2017. Contains 292275 sequences.