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A172414
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(2n+1)*Catalan triangle
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0
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1, 1, 1, 1, 2, 2, 2, 2, 2, 5, 5, 5, 5, 5, 5, 14, 14, 14, 14, 14, 14, 14, 14, 14, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,5
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COMMENTS
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Row sums = A001700
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LINKS
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Table of n, a(n) for n=1..35.
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EXAMPLE
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Triangle begins:
......1
....1,1,1
..2,2,2,2,2
5,5,5,5,5,5,5,
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CROSSREFS
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Cf. A001700, A000108
Sequence in context: A162487 A215924 A115101 * A023569 A051887 A139516
Adjacent sequences: A172411 A172412 A172413 * A172415 A172416 A172417
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KEYWORD
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nonn,tabf
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AUTHOR
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M. Dols (markdols99(AT)yahoo.com), Feb 02 2010
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STATUS
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approved
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