A134379 - OEIS

A134379

A084938 * A000012.

1, 1, 1, 2, 2, 1, 5, 5, 3, 1, 15, 15, 9, 4, 1, 54, 54, 30, 14, 5, 1, 235, 235, 115, 51, 20, 6, 1, 1237, 1237, 517, 205, 79, 27, 7, 1, 7790, 7790, 2750, 938, 332, 115, 35, 8, 1, 57581, 57581, 17261, 4973, 1545, 505, 160, 44, 9, 1

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

0,4

COMMENTS

Left border = A051295.

Row sums = A134378.

LINKS

Table of n, a(n) for n=0..54.

FORMULA

A084938 * A000012, partial sum triangle by rows, starting from the right of A084938.

EXAMPLE

First few rows of the triangle:

1, 1;

2, 2, 1;

5, 5, 3, 1;

15, 15, 9, 4, 1;

54, 54, 30, 14, 5, 1;

...

CROSSREFS

Cf. A084938, A134378, A051295.

Sequence in context: A171567 A110488 A271025 * A108087 A123158 A185414

Adjacent sequences: A134376 A134377 A134378 * A134380 A134381 A134382

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Oct 22 2007

STATUS

approved