A212434 Triangle read by rows, related to Stern's diatomic series A002487, or fusc(n). See Comments for precise definition.

1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 0, 0, 0, 0, 0

Offset

1,13

Comments

The n-th column of the triangle consists of three terms of A002487(n) preceded by (n-1) zeros; with the rest zeros.

Row sums are A002487 starting with offset 1: (1, 1, 2, 1, 3, 2,...).

Links

Table of n, a(n) for n=1..66.

Example

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

Crossrefs

Cf. A002487

Sequence in context: A354059 A187081 A369308 * A227186 A037134 A254612

Adjacent sequences: A212431 A212432 A212433 * A212435 A212436 A212437

Keyword

nonn,tabl

Author

Gary W. Adamson, Jun 21 2012

Extensions

Edited by N. J. A. Sloane, Jun 22 2012

Status

approved