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A130302 A000012 * A130296. 2
1, 3, 1, 6, 2, 1, 10, 3, 2, 1, 15, 4, 3, 2, 1, 21, 5, 4, 3, 2, 1, 28, 6, 5, 4, 3, 2, 1, 36, 7, 6, 5, 4, 3, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = n^2. A130303 = A130296 * A000012.

LINKS

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

FORMULA

A000012 * A130296 as infinite lower triangular matrices. Triangular series as the left border; (1,2,3...) in all other columns.

EXAMPLE

First few rows of the triangle are:

1;

3, 1;

6, 2, 1;

10, 3, 2, 1;

15, 4, 3, 2, 1;

21, 5, 4, 3, 2, 1;

...

CROSSREFS

Cf. A130296, A130303.

Sequence in context: A218971 A145791 A322041 * A270103 A134546 A152193

Adjacent sequences:  A130299 A130300 A130301 * A130303 A130304 A130305

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, May 20 2007

STATUS

approved

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Last modified August 6 10:14 EDT 2020. Contains 336245 sequences. (Running on oeis4.)