A104879 Row sums of a sum-of-powers triangle.

1, 2, 4, 8, 17, 40, 106, 316, 1049, 3830, 15208, 65072, 297841, 1449756, 7468542, 40555748, 231335961, 1381989882, 8623700812, 56078446616, 379233142801, 2662013133296, 19362917622002, 145719550012300, 1133023004941273, 9090156910550110, 75161929739797520

Offset

0,2

Links

Table of n, a(n) for n=0..26.

Formula

a(n) = 1 + n + Sum_{k=2..n+1} (k^(n-k+1)-1)/(k-1).

a(n) = 1 + A103439(n). - Mathew Englander, Dec 19 2020

Crossrefs

Row sums of A104878.

Cf. A103439 (terms differ by 1), A026898 (first differences).

Sequence in context: A210540 A332398 A307555 * A366220 A331686 A373632

Adjacent sequences: A104876 A104877 A104878 * A104880 A104881 A104882

Keyword

easy,nonn

Author

Paul Barry, Mar 28 2005

Status

approved