A134560 Triangle A051731 * A127775 (as infinite lower triangular matrices).

1, 1, 3, 1, 0, 5, 1, 3, 0, 7, 1, 0, 0, 0, 9, 1, 3, 5, 0, 0, 11, 1, 0, 0, 0, 0, 0, 13, 1, 3, 0, 7, 0, 0, 0, 15, 1, 0, 5, 0, 0, 0, 0, 0, 17, 1, 3, 0, 0, 9, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 1, 3, 5, 7, 0, 11, 0, 0, 0, 0, 0, 23

Offset

1,3

Comments

Obtained also by replacing the 1's in column k of A051731 with (2k-1).

Links

Table of n, a(n) for n=1..78.

Example

First few rows of the triangle:
  1;
  1,  3;
  1,  0,  5;
  1,  3,  0,  7;
  1,  0,  0,  0,  9;
  1,  3,  5,  0,  0, 11;
  1,  0,  0,  0,  0,  0, 13;
  1,  3,  0,  7,  0,  0,  0, 15;
  ...

Crossrefs

Cf. A129235 (row sums), A051731, A127775.

Sequence in context: A185911 A187954 A119302 * A127626 A245095 A154791

Adjacent sequences: A134557 A134558 A134559 * A134561 A134562 A134563

Keyword

nonn,tabl

Author

Gary W. Adamson, Oct 31 2007

Status

approved