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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 (list; table; graph; refs; listen; history; text; internal format)
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

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Last modified August 10 22:22 EDT 2020. Contains 336403 sequences. (Running on oeis4.)