A212434 - OEIS

%I #21 Jan 02 2013 12:20:48

%S 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,

%T 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

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

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

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

%e First few rows of the triangle =

%e 1;

%e 1, 0;

%e 1, 1, 0;

%e 0, 1, 0, 0;

%e 0, 1, 2, 0, 0;

%e 0, 0, 2, 0, 0, 0;

%e 0, 0, 2, 1, 0, 0, 0;

%e 0, 0, 0, 1, 0, 0, 0, 0;

%e 0, 0, 0, 1, 3, 0, 0, 0, 0;

%e 0, 0, 0, 0, 3, 0, 0, 0, 0, 0;

%e 0, 0, 0, 0, 3, 2, 0, 0, 0, 0, 0;

%e 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0;

%e 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0;

%e 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0;

%e ...

%Y Cf. A002487

%K nonn,tabl

%O 1,13

%A _Gary W. Adamson_, Jun 21 2012

%E Edited by _N. J. A. Sloane_, Jun 22 2012