A160183 Triangle, read by rows, obtained by dropping right diagonal from A160182.

1, 2, 1, 3, 1, 1, 5, 2, 1, 1, 6, 2, 1, 1, 1, 10, 4, 2, 1, 1, 1, 11, 4, 2, 1, 1, 1, 1, 16, 6, 3, 2, 1, 1, 1, 1, 19, 7, 4, 2, 1, 1, 1, 1, 1, 26, 10, 5, 3, 2, 1, 1, 1, 1, 1

Offset

1,2

Comments

A054525 * A160183 = triangle A160182. Mobius transform A054525 of the triangle shifts to the left adding I, I = Identity matrix.

Left border = A003238 starting (1, 2, 3, 5, 6, 10, 11, 16, 19,...).

Links

Table of n, a(n) for n=1..55.

Formula

A054525 * triangle A160182, also obtained by shifting triangle A160182 to the right, deleting the (1,1,1,...) right border.

Example

First few rows of the triangle =
1;
2, 1;
3, 1, 1;
5, 2, 1, 1;
6, 2, 1, 1, 1;
10, 4, 2, 1, 1, 1;
11, 4, 2, 1, 1, 1, 1;
16, 6, 3, 2, 1, 1, 1, 1;
19, 7, 4, 2, 1, 1, 1, 1, 1;
26, 10, 5, 3, 2, 1, 1, 1, 1, 1;
...

Crossrefs

Cf. A160182, A068336.

Sequence in context: A178623 A210765 A362372 * A168534 A026807 A338440

Adjacent sequences: A160180 A160181 A160182 * A160184 A160185 A160186

Keyword

nonn,tabl

Author

Gary W. Adamson, May 03 2009

Status

approved