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A157901 Triangle read by rows: A000012 * A157898 1
1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 3, 6, 10, 8, 8, 3, 9, 16, 24, 16, 16, 4, 12, 28, 40, 56, 32, 32, 4, 16, 40, 80, 96, 128, 64, 64, 5, 20, 60, 120, 216, 224, 288, 128, 128, 5, 25, 80, 200, 336, 560, 512, 640, 256, 256 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

Multiplication of the lower triangular matrix A157898 from the left by A000012 means: these are partial column sums of A157898.

LINKS

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

FORMULA

Row sums = A105635(n+1).

T(n,k) = sum_{l=0..n} A000012(n,l)*A157898(l,k).

EXAMPLE

First few rows of the triangle, n>=0:

1;

1, 1;

2, 2, 2;

2, 4, 4, 4;

3, 6, 10, 8, 8;

3, 9, 16, 24, 16, 16;

4, 12, 28, 40, 56, 32, 32;

4, 16, 40, 80, 96, 128, 64, 64;

5, 20, 60, 120, 216, 224, 288, 128, 128;

5, 25, 80, 200, 336, 560, 512, 640, 256, 256;

CROSSREFS

Sequence in context: A195427 A006643 A080217 * A327441 A335855 A297824

Adjacent sequences:  A157898 A157899 A157900 * A157902 A157903 A157904

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson & Roger L. Bagula, Mar 08 2009

EXTENSIONS

Edited by the Associate Editors of the OEIS, Apr 10 2009

STATUS

approved

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Last modified May 16 12:46 EDT 2021. Contains 343947 sequences. (Running on oeis4.)