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 A167592 The second left hand column of triangle A167591. 5
 -2, -8, -16, 0, 160, 896, 3584, 12288, 38400, 112640, 315392, 851968, 2236416, 5734400, 14417920, 35651584, 86900736, 209190912, 498073600, 1174405120, 2745171968, 6366953472, 14663286784, 33554432000, 76336332800, 172738215936 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 LINKS G. C. Greubel, Table of n, a(n) for n = 2..1000 Index entries for linear recurrences with constant coefficients, signature (8,-24,32,-16). FORMULA a(n) = 2^n*(n^3 - 6*n^2 + 5*n)/12. GF(z) = (8*z - 2)/(1-2*z)^4. a(n) = 8*a(n-1) - 24*a(n-2) + 32*a(n-3) - 16*a(n-4). a(n) - 7*a(n-1) + 18*a(n-2) - 20*a(n-3) + 8*a(n-4) = 1*2^(n-2). MATHEMATICA LinearRecurrence[{8, -24, 32, -16}, {-2, -8, -16, 0}, 100] (* G. C. Greubel, Jun 17 2016 *) CROSSREFS Equals the second left hand column of triangle A167591. Other left hand columns are A001787, A167593, A168307 and A168308. Sequence in context: A296798 A203419 A173287 * A094513 A110004 A182039 Adjacent sequences:  A167589 A167590 A167591 * A167593 A167594 A167595 KEYWORD easy,sign AUTHOR Johannes W. Meijer, Nov 10 2009 EXTENSIONS Formulae and links added by Johannes W. Meijer, Nov 23 2009 STATUS approved

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Last modified January 23 16:44 EST 2020. Contains 331172 sequences. (Running on oeis4.)