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A152201 Triangle read by rows, A000012 * A152198 3
1, 2, 3, 1, 4, 2, 5, 4, 1, 6, 6, 2, 7, 9, 5, 1, 8, 12, 8, 2, 9, 16, 14, 6, 1, 10, 20, 20, 10, 2, 11, 25, 30, 20, 7, 1, 12, 30, 40, 30, 12, 2, 13, 36, 55, 50, 27, 8, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums = A027383: (1, 2, 4, 6, 10, 14, 22, 30,...).

LINKS

Table of n, a(n) for n=0..48.

FORMULA

A000012 * A152198 = partial sums of A152198 column terms.

EXAMPLE

First few rows of the triangle =

1;

2;

3, 1;

4, 2;

5, 4, 1;

6, 6, 2;

7, 9, 5, 1;

8, 12, 8, 2;

9, 16, 14, 6, 1;

10, 10, 20, 20, 2;

11, 25, 30, 20, 7, 1;

12, 30, 40, 30, 12, 2;

13, 36, 55, 50, 27, 8, 1;

...

CROSSREFS

A152198, A027383

Sequence in context: A023123 A023131 A026276 * A265579 A120873 A125161

Adjacent sequences:  A152198 A152199 A152200 * A152202 A152203 A152204

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Nov 29 2008

STATUS

approved

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Last modified March 20 07:42 EDT 2019. Contains 321345 sequences. (Running on oeis4.)