A078053 Expansion of (1-x)/(1+2*x-2*x^2-2*x^3).
1, -3, 8, -20, 50, -124, 308, -764, 1896, -4704, 11672, -28960, 71856, -178288, 442368, -1097600, 2723360, -6757184, 16765888, -41599424, 103216256, -256099584, 635432832, -1576632320, 3911931136, -9706261248, 24083120128, -59754900480, 148263518720, -367870598144
Offset: 0
Links
- Index entries for linear recurrences with constant coefficients, signature (-2,2,2).
Programs
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Mathematica
CoefficientList[Series[(1-x)/(1+2x-2x^2-2x^3),{x,0,30}],x] (* or *) LinearRecurrence[{-2,2,2},{1,-3,8},30] (* Harvey P. Dale, Dec 17 2017 *)