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

0,4

Comments

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

Links

Table of n, a(n) for n=0..70.

Formula

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

Example

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.

Sequence in context: A096144 A118401 A354786 * A113678 A305436 A328708

Adjacent sequences: A147764 A147765 A147766 * A147768 A147769 A147770

Keyword

nonn,tabl

Author

Gary W. Adamson, Nov 11 2008

Extensions

Typo in formula corrected by Olivier Gérard, Jul 25 2016

Status

approved