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 A129027 Odd-indexed terms of A129026. 1
 0, 108, 600, 1932, 4752, 9900, 18408, 31500, 50592, 77292, 113400, 160908, 222000, 299052, 394632, 511500, 652608, 821100, 1020312, 1253772, 1525200, 1838508, 2197800, 2607372, 3071712, 3595500, 4183608, 4841100, 5573232, 6385452, 7283400, 8272908 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..31. Index entries for linear recurrences with constant coefficients, signature (5,-10,10,-5,1). FORMULA a(n) = 4*(n*(5+13*n+7*n^2+2*n^3)). G.f.: -12*x*(x^3+x^2+5*x+9) / (x-1)^5. - Colin Barker, Jul 27 2013 CROSSREFS Sequence in context: A059436 A233685 A160919 * A288706 A204276 A202194 Adjacent sequences: A129024 A129025 A129026 * A129028 A129029 A129030 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, May 10 2007 STATUS approved

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Last modified September 22 11:59 EDT 2023. Contains 365531 sequences. (Running on oeis4.)