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A144417
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Triangle in A144385 read upwards by columns.
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1
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1, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 6, 7, 0, 0, 1, 10, 25, 10, 0, 0, 1, 15, 65, 75, 10, 0, 0, 1, 21, 140, 315, 175, 0, 0, 0, 1, 28, 266, 980, 1225, 280, 0, 0, 0, 1, 36, 462, 2520, 5565, 3780, 280, 0, 0, 0, 1, 45, 750, 5670, 19425, 26145, 9100, 0, 0, 0, 0, 1, 55
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,8
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LINKS
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Table of n, a(n) for n=0..67.
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EXAMPLE
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Triangle begins:
1
1,0
1,1,0
1,3,1,0
1,6,7,0,0
1,10,25,10,0,0
1,15,65,75,10,0,0
1,21,140,315,175,0,0,0
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CROSSREFS
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Column sums give A001680. Cf. A144385.
Sequence in context: A122935 A131198 A090181 * A085791 A144645 A151510
Adjacent sequences: A144414 A144415 A144416 * A144418 A144419 A144420
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KEYWORD
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nonn,tabl
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AUTHOR
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David Applegate and N. J. A. Sloane, Dec 07 2008
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STATUS
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approved
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