A134576 A127733 * A051731.

1, 4, 4, 9, 0, 9, 16, 16, 0, 16, 25, 0, 0, 0, 25, 36, 36, 36, 0, 0, 36, 49, 0, 0, 0, 0, 0, 49, 64, 64, 0, 64, 0, 0, 0, 64, 81, 0, 81, 0, 0, 0, 0, 0, 81, 100, 100, 0, 0, 100, 0, 0, 0, 0, 100

Offset

1,2

Comments

Row sums = A034714: (1, 8, 18, 48, 50, 144, ...).

Links

Table of n, a(n) for n=1..55.

Formula

A127733 * A051731 as infinite lower triangular matrices.

Triangle read by rows: replace 1's in n-th row of A051731 with n^2.

Example

First few rows of the triangle:
   1;
   4,  4;
   9,  0,  9;
  16, 16,  0, 16;
  25,  0,  0,  0, 25;
  36, 36, 36,  0,  0, 36;
  49,  0,  0,  0,  0,  0, 49;
  ...

Crossrefs

Cf. A051731, A127733, A034714.

Sequence in context: A201989 A071775 A269594 * A176441 A363683 A143183

Adjacent sequences: A134573 A134574 A134575 * A134577 A134578 A134579

Keyword

nonn,tabl,more

Author

Gary W. Adamson, Nov 02 2007

Status

approved