A094117 Partial sums of A093349.

0, 1, 1, 2, 2, 3, 3, 10, 16, 23, 29, 36, 42, 49, 49, 50, 50, 51, 51, 52, 52, 59, 65, 72, 78, 85, 91, 98, 98, 99, 99, 100, 100, 101, 101, 108, 114, 121, 127, 134, 140, 147, 147, 148, 148, 149, 149, 150, 150, 199, 247, 296, 344, 393, 441, 490, 532, 575, 617, 660, 702, 745

Offset

1,4

Links

Table of n, a(n) for n=1..62.

Formula

a(7^k)=(49^k-1)/16

Prog

(PARI) a(n)=sum(k=1, n, -sum(i=1, k-1, (-1)^i*7^valuation(i, 7)))

Crossrefs

Sequence in context: A360250 A095060 A319628 * A097365 A156906 A216245

Adjacent sequences: A094114 A094115 A094116 * A094118 A094119 A094120

Keyword

nonn

Author

Benoit Cloitre, May 03 2004

Status

approved