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Search: id:A143130
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| 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; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A051946: (1, 11, 56, 196, 546, 1302,...).
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FORMULA
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Triangle read by rows, A000012 * (A000332 * 0^(n-k)) * A000012, 0<=k<=n; where A000332 starts (1, 5, 15, 35, 70,...).
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EXAMPLE
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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;
...
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CROSSREFS
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Cf. A000332, A051946.
Sequence in context: A119636 A101493 A039668 this_sequence A082384 A070399 A137763
Adjacent sequences: A143127 A143128 A143129 this_sequence A143131 A143132 A143133
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 27 2008
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