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A022950 a(n) = a(n-1) + c(n) for n >= 3, a( ) increasing, given a(1)=1 a(2)=7; where c( ) is complement of a( ). 1
1, 7, 11, 16, 22, 30, 39, 49, 61, 74, 88, 103, 120, 138, 157, 177, 198, 221, 245, 270, 296, 323, 351, 380, 411, 443, 476, 510, 545, 581, 618, 656, 696, 737, 779, 822, 866, 911, 957, 1004, 1052, 1102, 1153, 1205, 1258, 1312, 1367, 1423, 1480, 1538 (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, 7}, Range[3, 50]] (* Ivan Neretin, Apr 05 2016 *)

CROSSREFS

Cf. A005228 and references therein.

Sequence in context: A284485 A089997 A129188 * A334456 A293343 A131626

Adjacent sequences:  A022947 A022948 A022949 * A022951 A022952 A022953

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 28 13:40 EST 2021. Contains 349412 sequences. (Running on oeis4.)