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%I #9 Apr 05 2016 10:26:19
%S 1,2,3,4,5,7,10,12,15,18,21,26,29,34,38,43,49,53,59,65,71,79,84,91,98,
%T 106,115,121,130,138,147,157,165,175,184,194,205,215,226,236,248,260,
%U 271,283,294,308,321,333,346,358,374,388,401,415,428,446,461
%N Unique increasing sequence satisfying a(n) = a(n-5) + c(n-5); where c( ) is complement of a( ).
%C Here "complement" refers to the numbers not in the sequence.
%H Ivan Neretin, <a href="/A022957/b022957.txt">Table of n, a(n) for n = 1..10000</a>
%t Fold[Append[#1, #1[[#2]] + Complement[Range[Max@#1 + 1], #1][[#2]]] &, {1, 2, 3, 4, 5}, Range[52]] (* _Ivan Neretin_, Apr 05 2016 *)
%Y Cf. A005228 and references therein.
%K nonn
%O 1,2
%A _Clark Kimberling_
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