login
A373397
Expansion of Sum_{k>=0} x^(6^k) / (1 - x^(6^k))^2.
1
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, 27, 28, 29, 35, 31, 32, 33, 34, 35, 43, 37, 38, 39, 40, 41, 49, 43, 44, 45, 46, 47, 56, 49, 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
OFFSET
1,2
LINKS
FORMULA
G.f. A(x) satisfies A(x) = x/(1 - x)^2 + A(x^6).
If n == 0 (mod 6), a(n) = n + a(n/6) otherwise a(n) = n.
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jun 04 2024
STATUS
approved