A127754 Row sums of inverse of number triangle A(n,k) = 1/L(n+1) if k <= n <= 2k, 0 otherwise, where L(n) = A000032(n).

1, 3, 1, 6, 4, 8, 11, 24, 29, 51, 76, 131, 199, 333, 521, 867, 1364, 2236, 3571, 5829, 9349, 15203, 24476, 39734, 64079, 103881, 167761, 271776, 439204, 711168, 1149851, 1861365, 3010349, 4872211, 7881196, 12754279, 20633239

Offset

0,2

Comments

Row sums of A127753.

Links

Table of n, a(n) for n=0..36.

Crossrefs

Sequence in context: A021320 A193864 A066840 * A328508 A210841 A007383

Adjacent sequences: A127751 A127752 A127753 * A127755 A127756 A127757

Keyword

nonn

Author

Paul Barry, Jan 28 2007

Status

approved