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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
OFFSET
1,2
COMMENTS
Row sums = A051946: (1, 11, 56, 196, 546, 1302,...).
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
Sequence in context: A039668 A281175 A281221 * A318547 A082384 A248265
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jul 27 2008
STATUS
approved