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A141210 Triangle read by rows, A140207^2. 1
1, 2, 1, 4, 3, 4, 7, 6, 10, 9, 12, 11, 20, 24, 25, 19, 18, 34, 45, 60, 49, 30, 29, 56, 78, 115, 126, 121, 45, 44, 86, 123, 190, 231, 286, 225, 67, 66, 130, 189, 300, 385, 528, 555, 484, 97, 96, 190, 279, 450, 595, 858, 1005, 1144, 900 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Left border of the triangle = A000070; right border = A001255.

LINKS

Table of n, a(n) for n=0..54.

FORMULA

A140207^2 as an infinite lower triangular matrix.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

4, 3, 4;

7, 6, 10, 9;

12, 11, 20, 24, 25;

19, 18, 34, 45, 60, 49;

30, 29, 56, 78, 115, 126, 121;

...

CROSSREFS

Cf. A001255, A141211 (row sums), A140207, A000070.

Sequence in context: A071046 A324757 A144334 * A244373 A107640 A030065

Adjacent sequences:  A141207 A141208 A141209 * A141211 A141212 A141213

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson & Roger L. Bagula, Jun 13 2008

STATUS

approved

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Last modified January 24 17:28 EST 2022. Contains 350565 sequences. (Running on oeis4.)