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A144329 Triangle read by rows, A000012 * A144328 2
1, 2, 1, 3, 2, 2, 4, 3, 4, 3, 5, 4, 6, 6, 4, 6, 5, 8, 9, 8, 5, 7, 6, 10, 12, 12, 10, 6, 8, 7, 12, 15, 16, 15, 12, 7, 9, 8, 14, 18, 20, 20, 18, 14, 8, 10, 9, 16, 21, 24, 25, 24, 21, 16, 9, 11, 10, 18, 24, 28, 30, 30, 28, 24, 18, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A004006: (1, 3, 7, 14, 25, 41, 63, 92, 129,...).

LINKS

Table of n, a(n) for n=1..66.

FORMULA

Triangle read by rows A000012 * A144328.

Partial sums of A144328 by columns.

EXAMPLE

First few rows of the triangle =

1;

2, 1;

3, 2, 2;

4, 3, 4, 3;

5, 4, 6, 6, 4;

6, 5, 8, 9, 8, 5;

7, 6, 10, 12 12, 10, 6;

8, 7, 12, 15, 16, 15, 12, 7;

...

CROSSREFS

A144328, Cf. A004006

Sequence in context: A317207 A102364 A132923 * A141157 A137948 A210553

Adjacent sequences:  A144326 A144327 A144328 * A144330 A144331 A144332

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Sep 18 2008

STATUS

approved

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Last modified December 16 14:50 EST 2018. Contains 318167 sequences. (Running on oeis4.)