A130271 Triangle read by rows: A051340^2.

1, 3, 4, 5, 5, 9, 7, 7, 7, 16, 9, 9, 9, 9, 25, 11, 11, 11, 11, 11, 36, 13, 13, 13, 13, 13, 13, 49, 15, 15, 15, 15, 15, 15, 15, 64

Offset

1,2

Comments

Row sums = A003215: (1, 7, 19, 37, 61, 91, 127, ...).

Links

Table of n, a(n) for n=1..36.

Formula

The square of A051340 as an infinite lower triangular matrix.

Example

First few rows of the triangle:
   1;
   3,  4;
   5,  5,  9;
   7,  7,  7, 16;
   9,  9,  9,  9, 25;
  11, 11, 11, 11, 11, 36;
  13, 13, 13, 13, 13, 13, 49;
  ...

Crossrefs

Cf. A051340, A003215.

Sequence in context: A240214 A181132 A278168 * A139369 A370731 A151555

Adjacent sequences: A130268 A130269 A130270 * A130272 A130273 A130274

Keyword

nonn,tabl

Author

Gary W. Adamson, May 18 2007

Extensions

Edited by N. J. A. Sloane, Jan 05 2009

Status

approved