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 A128798 (n^2-n)*4^n. 1
 0, 0, 32, 384, 3072, 20480, 122880, 688128, 3670016, 18874368, 94371840, 461373440, 2214592512, 10468982784, 48855252992, 225485783040, 1030792151040, 4672924418048, 21028159881216, 94008244174848, 417814418554880 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Index to sequences with linear recurrences with constant coefficients, signature (12,-48,64). FORMULA G.f.: 32*x^2/(1 - 4*x)^3. - Vincenzo Librandi, Feb 10 2013 MATHEMATICA CoefficientList[Series[32 x^2/(1 - 4 x)^3, {x, 0, 30}], x] (* Vincenzo Librandi, Feb 10 2013 *) PROG (MAGMA) [(n^2-n)*4^n: n in [0..20]]; // Vincenzo Librandi, Feb 10 2013 CROSSREFS Cf. A036289, A007758. Sequence in context: A125420 A163690 A087024 * A086942 A068548 A195191 Adjacent sequences:  A128795 A128796 A128797 * A128799 A128800 A128801 KEYWORD nonn AUTHOR Mohammad K. Azarian, Apr 07 2007 STATUS approved

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