A177446 Triangle read by rows: A000012 * A177444 * the diagonalized variant of A120562.

1, 2, 0, 2, 1, 0, 3, 2, 0, 0, 3, 2, 1, 0, 0, 3, 3, 2, 0, 0, 0, 3, 3, 2, 2, 0, 0, 0, 3, 3, 3, 4, 0, 0, 0, 0, 3, 3, 3, 4, 1, 0, 0, 0, 0, 3, 3, 3, 6, 2, 0, 0, 0, 0, 0, 3, 3, 3, 6, 2, 2, 0, 0, 0, 0, 0, 3, 3, 3, 6, 3, 4, 0, 0, 0, 0, 0, 0, 3, 3, 3, 6, 3, 4, 2, 0, 0, 0, 0, 0, 0

Offset

0,2

Comments

Row sums = A177445. Rows apparently tend to 3 * A120562 = 3 * (1, 1, 1, 2, 1, 2, 2, 3, 1, 3, ...).

Links

Table of n, a(n) for n=0..90.

Formula

Triangle read by rows, M*Q*R; such that M = an infinite lower triangular matrix with all 1's, Q = triangle A177444, and R = the diagonalized variant of A120562 (A120562 in the diagonal and the rest zeros).

Example

First few rows of the triangle =
1;
2, 0;
2, 1, 0;
3, 2, 0, 0;
3, 2, 1, 0, 0;
3, 3, 2, 0, 0, 0;
3, 3, 2, 2, 0, 0, 0;
3, 3, 3, 4, 0, 0, 0, 0;
3, 3, 3, 4, 1, 0, 0, 0, 0;
3, 3, 3, 6, 2, 0, 0, 0, 0, 0;
3, 3, 3, 6, 2, 2, 0, 0, 0, 0, 0;
3, 3, 3, 6, 3, 4, 0, 0, 0, 0, 0, 0;
3, 3, 3, 6, 3, 4, 2, 0, 0, 0, 0, 0, 0;
3, 3, 3, 6, 3, 6, 4, 0, 0, 0, 0, 0, 0, 0;
3, 3, 3, 6, 3, 6, 4, 3, 0, 0, 0, 0, 0, 0, 0;
...

Crossrefs

Cf. A120562, A177444, A177445.

Sequence in context: A321361 A319517 A321460 * A074905 A058548 A372876

Adjacent sequences: A177443 A177444 A177445 * A177447 A177448 A177449

Keyword

nonn,tabl

Author

Gary W. Adamson, May 08 2010

Extensions

Definition corrected by Georg Fischer, May 31 2023

Status

approved