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A141157 Triangle read by rows, A000012 * A140207. 2
1, 2, 1, 3, 2, 2, 4, 3, 4, 3, 5, 4, 6, 6, 5, 6, 5, 8, 9, 10, 7, 7, 6, 10, 12, 15, 14, 11, 8, 7, 12, 15, 20, 21, 22, 15, 9, 8, 14, 18, 25, 28, 33, 30, 22, 10, 9, 16, 21, 30, 35, 44, 45, 44, 30, 11, 10, 18, 24, 35, 4255, 60, 66, 60, 42 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Right border = partition numbers, A000041.

Row sums = A014153: (1, 3, 7, 14, 26, 45, 75,...).

LINKS

Table of n, a(n) for n=0..64.

FORMULA

Triangle read by rows, A000012 * A140207; equivalent to taking partial sums of triangle A140207 terms, by columns.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

3, 2, 2;

4, 3, 4, 3;

5, 4, 6, 6, 5;

6, 5, 8, 9, 10, 7;

7, 6, 10, 12, 15, 14, 11;

8, 7, 12, 15, 20, 21, 22, 15;

9, 8, 14, 18, 25, 28, 33, 30, 22;

10, 9, 16, 21, 30, 35, 44, 45, 44, 30;

...

CROSSREFS

Cf. A140207, A014153, A000041.

Sequence in context: A342774 A132923 A144329 * A357213 A137948 A210553

Adjacent sequences: A141154 A141155 A141156 * A141158 A141159 A141160

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson & Roger L. Bagula, Jun 12 2008

STATUS

approved

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Last modified December 8 14:51 EST 2022. Contains 358695 sequences. (Running on oeis4.)