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 A163276 a(n) = n^6*(n+1)^2/2. 3
 0, 2, 288, 5832, 51200, 281250, 1143072, 3764768, 10616832, 26572050, 60500000, 127552392, 252315648, 473027282, 847072800, 1458000000, 2424307712, 3910286178, 6139206432, 9409176200, 14112000000, 20755401282, 29988984608 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Index to sequences with linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1). FORMULA G.f.: 2*x*(1+135*x+1656*x^2+4456*x^3+3231*x^4+585*x^5+16*x^6)/(1-x)^9. [Colin Barker, May 05 2012] MAPLE seq((1/2)*n^6*(n+1)^2, n = 0 .. 25); [From Emeric Deutsch, Aug 01 2009] CROSSREFS Cf. A006002, A099903, A163102, A163274, A163275, A163277. Sequence in context: A172374 A080296 A182519 * A065498 A203771 A057746 Adjacent sequences:  A163273 A163274 A163275 * A163277 A163278 A163279 KEYWORD easy,nonn AUTHOR Omar E. Pol, Jul 24 2009 EXTENSIONS Extended by Emeric Deutsch, Aug 01 2009 STATUS approved

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