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A108074
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Triangle in A071944 with rows reversed.
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0
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1, 1, 1, 2, 2, 1, 6, 5, 3, 1, 19, 16, 9, 4, 1, 63, 54, 31, 14, 5, 1, 219, 188, 111, 52, 20, 6, 1, 787, 676, 405, 197, 80, 27, 7, 1, 2897, 2492, 1508, 752, 320, 116, 35, 8, 1, 10869, 9361, 5712, 2900, 1276, 489, 161, 44, 9, 1, 41414, 35702, 21933, 11296, 5095, 2034, 714
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,4
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COMMENTS
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LINKS
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FORMULA
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T(0, 0) = 1; T(n, k) = 0 if k<0 or if k>n; T(n, k) = Sum_{j>=0} T(n-1, k-1+j) + Sum_{j>=0} T(n-1, k+2+j). - Philippe Deléham, Sep 15 2005
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EXAMPLE
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Triangle begins:
1;
1, 1;
2, 2, 1;
6, 5, 3, 1;
19, 16, 9, 4, 1; ...
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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