A147767 Triangle read by rows, square of A116598.

1, 0, 1, 2, 0, 1, 2, 2, 0, 1, 5, 2, 2, 0, 1, 6, 5, 2, 2, 0, 1, 6, 5, 2, 2, 0, 1, 13, 6, 5, 2, 2, 0, 1, 16, 13, 6, 5, 2, 2, 0, 1, 30, 16, 13, 6, 5, 2, 2, 0, 1, 40, 30, 16, 13, 6, 5, 2, 2, 0, 1, 40, 30, 16, 13, 6, 5, 2, 2, 0, 1

Offset: 0

Author

Gary W. Adamson, Nov 11 2008

Keywords

• nonn
• tabl

Comments

Row sums = A000990: (1, 1, 3, 5, 10, 16, 29, 45, ...).

Examples

			First few rows of the triangle:
   1;
   0,  1;
   2,  0, 1;
   2,  2, 0, 1;
   5,  2, 2, 0, 1;
   6,  5, 2, 2, 0, 1;
  13,  6, 5, 2, 2, 0, 1;
  16, 13, 6, 5, 2, 2, 0, 1;
  ...
		

Crossrefs

Cf. A147766, A000990.

Formula

Triangle read by rows, A116598^2. A147766 in every column.

Extensions

Typo in formula corrected by Olivier Gérard, Jul 25 2016