A128255 A114219(signed) * A007318.

1, 1, 1, 2, 3, 1, 2, 6, 5, 1, 3, 10, 13, 7, 1, 3, 15, 27, 23, 9, 1, 4, 21, 48, 57, 36, 1, 4, 28, 78, 118, 104, 52, 13, 1, 5, 36, 118, 218, 246, 172, 71, 15, 1, 5, 45, 170, 370, 510, 458, 265, 93, 17, 1

Offset

1,4

Comments

Row sums = A059570: (1, 2, 6, 14, 34, 78, 178,...).

Links

Table of n, a(n) for n=1..54.

Formula

Let the signed version of A114219 {1; 0,1; 0,1,1; 0,-1,2,1; 0,1,-2,-3,4;...} = M; and P = Pascal's triangle, A007318. Then A128255 = A114219(signed) * A007318.

Example

First few rows of the triangle are:
1;
1, 1;
2, 3, 1;
2, 6, 5, 1;
3, 10, 13, 7, 1;
3, 15, 27, 23, 9, 1;
4, 21, 48, 57, 36, 11, 1;
...

Crossrefs

Cf. A128254, A114219, A007318, A059570, A097807, A128229.

Sequence in context: A256910 A181176 A131108 * A154948 A109091 A138507

Adjacent sequences: A128252 A128253 A128254 * A128256 A128257 A128258

Keyword

nonn,tabl

Author

Gary W. Adamson, Feb 20 2007

Status

approved