A152193 Triangle read by rows, A034839 * (A027826 * 0^(n-k)).

1, 1, 1, 1, 1, 3, 1, 6, 2, 1, 10, 10, 1, 15, 30, 4, 1, 21, 70, 28, 1, 28, 140, 112, 9, 1, 36, 252, 336, 81, 1, 45, 420, 840, 405, 21, 1, 55, 660, 1848, 1485, 231, 1, 66, 990, 3696, 4455, 1386, 50

Offset

0,6

Comments

Row sums = A027826, the eigensequence of triangle A034839.

Links

Table of n, a(n) for n=0..48.

Formula

A034839 * (A027826 * 0^(n-k)) = A034839 * an infinite lower triangular matrix with A027826: (1, 1, 2, 4, 9, 21, 50, 120,...) and the rest zeros.

Example

First few rows of the triangle =
1;
1;
1, 1;
1, 3;
1, 6, 2;
1, 10, 10;
1, 15, 30, 4;
1, 21, 70, 28;
1, 28, 140, 112, 9;
1, 36, 252, 336, 81;
1, 45, 420, 840, 405, 21;
1, 55, 660, 1848, 1485, 231;
1, 66, 990, 3696, 4455, 1386, 50;
...

Crossrefs

Cf. A034839, A027826.

Sequence in context: A130302 A270103 A134546 * A055151 A181187 A104573

Adjacent sequences: A152190 A152191 A152192 * A152194 A152195 A152196

Keyword

nonn,tabf,more

Author

Gary W. Adamson, Nov 28 2008

Status

approved