A373397 - OEIS

%I #56 Jun 04 2024 10:52:14

%S 1,2,3,4,5,7,7,8,9,10,11,14,13,14,15,16,17,21,19,20,21,22,23,28,25,26,

%T 27,28,29,35,31,32,33,34,35,43,37,38,39,40,41,49,43,44,45,46,47,56,49,

%U 50,51,52,53,63,55,56,57,58,59,70,61,62,63,64,65,77,67,68,69,70,71,86,73,74,75,76,77,91

%N Expansion of Sum_{k>=0} x^(6^k) / (1 - x^(6^k))^2.

%H Seiichi Manyama, <a href="/A373397/b373397.txt">Table of n, a(n) for n = 1..10000</a>

%F G.f. A(x) satisfies A(x) = x/(1 - x)^2 + A(x^6).

%F If n == 0 (mod 6), a(n) = n + a(n/6) otherwise a(n) = n.

%Y Cf. A129527, A327625, A359099, A359100, A373188.

%Y Cf. A373216.

%K nonn

%O 1,2

%A _Seiichi Manyama_, Jun 04 2024