

A130271


Triangle read by rows: A051340^2.


0



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
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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 are:
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 A151555 A263728
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



