A343272 Partial sums of A170842.

1, 3, 6, 8, 15, 27, 36, 38, 45, 57, 70, 90, 135, 189, 216, 218, 225, 237, 250, 270, 315, 369, 400, 420, 465, 527, 606, 756, 999, 1215, 1296, 1298, 1305, 1317, 1330, 1350, 1395, 1449, 1480, 1500, 1545, 1607, 1686, 1836, 2079, 2295, 2380, 2400, 2445, 2507, 2586, 2736, 2979, 3203

Offset

0,2

Links

Table of n, a(n) for n=0..53.

Formula

G.f.: 1/(1-x) * Product_{k>=1} (1 + 2*x^(2^k-1) + 3*x^(2^k)). - Alois P. Heinz, Apr 10 2021

Crossrefs

Cf. A170842, A187220.

Sequence in context: A352507 A117148 A376480 * A305595 A320687 A340494

Adjacent sequences: A343269 A343270 A343271 * A343273 A343274 A343275

Keyword

nonn

Author

Omar E. Pol, Apr 10 2021

Status

approved