A171734 First differences of A171733.
2, 0, 6, 24, 10, 96, 14, 240, 18, 480, 22, 840, 26, 1344, 30, 2016, 34, 2880, 38, 3960, 42, 5280, 46, 6864, 50, 8736, 54, 10920, 58, 13440, 62, 16320, 66, 19584, 70, 23256, 74, 27360, 78, 31920, 82, 36960, 86, 42504, 90, 48576, 94, 55200, 98, 62400, 102
Offset: 0
Links
- Index entries for linear recurrences with constant coefficients, signature (0,4,0,-6,0,4,0,-1).
Formula
G.f.: 2*( 1-x^2+12*x^3-x^4+x^6 ) / ( (x-1)^4*(1+x)^4 ). - R. J. Mathar, Jul 02 2011