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A143130 Triangle read by rows, A000012 * (A000332 * 0^(n-k)) * A000012, 0<=k<=n. 1
1, 6, 5, 21, 20, 15, 56, 55, 50, 35, 126, 125, 120, 105, 70, 252, 251, 246, 231, 196, 126, 462, 461, 456, 441, 406, 336, 210, 792, 791, 786, 771, 736, 666, 540, 330, 1287, 1286, 1281, 1266, 1231, 1161, 1035, 825, 495, 2002, 2001, 1996, 1981, 1946, 1876, 1750 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A051946: (1, 11, 56, 196, 546, 1302,...).

LINKS

Table of n, a(n) for n=1..52.

FORMULA

Triangle read by rows, A000012 * (A000332 * 0^(n-k)) * A000012, 0<=k<=n; where A000332 starts (1, 5, 15, 35, 70,...).

EXAMPLE

First few rows of the triangle =

1;

6, 5;

21, 20, 15;

56, 55, 50, 35;

126, 125, 120, 105, 70;

252, 251, 246, 231, 196, 126;

462, 461, 456, 441, 406, 336, 210;

792, 791, 786, 771, 736, 666, 540, 330;

...

CROSSREFS

Cf. A000332, A051946.

Sequence in context: A039668 A281175 A281221 * A318547 A082384 A248265

Adjacent sequences:  A143127 A143128 A143129 * A143131 A143132 A143133

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jul 27 2008

STATUS

approved

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Last modified July 20 01:17 EDT 2019. Contains 325168 sequences. (Running on oeis4.)