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Search: id:A087863
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| A087863 |
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(n^3+24*n^2+65*n+36)/6. |
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+0
1
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| 6, 21, 45, 79, 124, 181, 251, 335, 434, 549, 681, 831, 1000, 1189, 1399, 1631, 1886, 2165, 2469, 2799, 3156, 3541, 3955, 4399, 4874, 5381, 5921, 6495, 7104, 7749, 8431, 9151, 9910, 10709, 11549, 12431, 13356, 14325, 15339, 16399, 17506, 18661, 19865
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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a(0)=A=6; a(1)=a(0)+(A+1)+(A+2)=3A+3, a(2)=a(1)+(A+1)+(A+2)+(A+3)=6A+9, a(3)=a(2)+(A+1)+(A+2)+(A+3)+(A+4)=10A+19, ...
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CROSSREFS
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Sequence in context: A048036 A119868 A081266 this_sequence A051941 A028345 A097124
Adjacent sequences: A087860 A087861 A087862 this_sequence A087864 A087865 A087866
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KEYWORD
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nonn,easy
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AUTHOR
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Helmut E. Fuchs (helmut2(AT)juno.com), Oct 26 2003
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EXTENSIONS
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New definition from Vladeta Jovovic (vladeta(AT)Eunet.yu), Oct 27 2003
More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 27 2003
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