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Search: id:A011842
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| 0, 0, 0, 0, 1, 2, 5, 8, 14, 21, 30, 41, 55, 71, 91, 113, 140, 170, 204, 242, 285, 332, 385, 442, 506, 575, 650, 731, 819, 913, 1015, 1123, 1240, 1364, 1496, 1636, 1785, 1942, 2109, 2284, 2470, 2665, 2870, 3085
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OFFSET
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0,6
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MAPLE
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seq(floor(binomial(n, 3)/4), n=0..43); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 12 2009]
seq(floor(binomial(n, 3)/4) , n=0..43); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 12 2009]
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CROSSREFS
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A column of triangle A011847.
Sequence in context: A022907 A006918 A165189 this_sequence A000094 A058578 A023674
Adjacent sequences: A011839 A011840 A011841 this_sequence A011843 A011844 A011845
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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