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A030237
Catalan's triangle with right border removed: 1; 1,2; 1,3,5; ...
+0
18
1, 1, 2, 1, 3, 5, 1, 4, 9, 14, 1, 5, 14, 28, 42, 1, 6, 20, 48, 90, 132, 1, 7, 27, 75, 165, 297, 429, 8, 35, 110, 275, 572, 1001, 1430, 1, 9, 44, 154, 429, 1001, 2002, 3432, 4862
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Maintained by
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
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