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 A087863 (n^3+24*n^2+65*n+36)/6. 0
 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; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS 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, ... LINKS CROSSREFS Sequence in context: A119868 A175729 A081266 * A212656 A051941 A212707 Adjacent sequences:  A087860 A087861 A087862 * A087864 A087865 A087866 KEYWORD nonn,easy AUTHOR Helmut E. Fuchs (helmut2(AT)juno.com), Oct 26 2003 EXTENSIONS New definition from Vladeta Jovovic, Oct 27 2003 More terms from Ray Chandler, Oct 27 2003 STATUS approved

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