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Search: id:A005476
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| 0, 2, 9, 21, 38, 60, 87, 119, 156, 198, 245, 297, 354, 416, 483, 555, 632, 714, 801, 893, 990, 1092, 1199, 1311, 1428, 1550, 1677, 1809, 1946, 2088, 2235, 2387, 2544, 2706, 2873, 3045, 3222, 3404, 3591
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OFFSET
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0,2
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FORMULA
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a(n)=C(5*n,2)/5,n>=0 - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 02 2007
a(n)=A033991(n)-A000326(n). - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 11 2007
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MAPLE
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[seq(binomial(5*n, 2)/5, n=0..38)]; - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 02 2007
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CROSSREFS
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Sequence in context: A041285 A002888 A041963 this_sequence A131476 A023549 A024850
Adjacent sequences: A005473 A005474 A005475 this_sequence A005477 A005478 A005479
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KEYWORD
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nonn
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AUTHOR
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njas
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