A226175 a(n) = A068336(n+1) - 1.

1, 3, 5, 9, 11, 19, 21, 31, 37, 51, 53, 79, 81, 105, 121, 153, 155, 207, 209, 267, 293, 349, 351, 453, 465, 549, 587, 699, 701, 875, 877, 1031, 1089, 1247, 1279, 1547, 1549, 1761, 1847, 2137, 2139, 2529, 2531, 2887, 3041, 3395, 3397, 3973, 3995, 4501

Offset

1,2

Comments

Row sums of triangle A160183.

Equals M * V, where M = A051731, the inverse Mobius transform and V = A068336: (1, 2, 4, 6, 10, 12, ...).

Links

Table of n, a(n) for n=1..50.

Formula

a(n) = A068336(n+1) - 1

Example

a(6) = 19 = A068336(7) - 1 = (20 - 1).
a(6) = 19 = (1, 1, 1, 0, 0, 1) dot (1, 2, 4, 6, 10, 12) = (1 + 2 + 4 + 0 + 0 + 12); where (1, 1, 1, 0, 0, 1) = row 6 of triangle A051731.

Crossrefs

Cf. A068336 (Mobius transform), A160183, A051731, A054525.

Sequence in context: A074986 A307435 A123328 * A091945 A212288 A213208

Adjacent sequences: A226172 A226173 A226174 * A226176 A226177 A226178

Keyword

nonn

Author

Gary W. Adamson, May 29 2013

Status

approved