Expansion of 1/(1 - 2*x - 2*x^2 - 2*x^3 - 2*x^4).

Terms

a(0) =1a(1) =2a(2) =6a(3) =18a(4) =54a(5) =160a(6) =476a(7) =1416a(8) =4212a(9) =12528a(10) =37264a(11) =110840a(12) =329688a(13) =980640a(14) =2916864a(15) =8676064a(16) =25806512a(17) =76760160a(18) =228319200a(19) =679123872a(20) =2020019488a(21) =6008445440a(22) =17871816000a(23) =53158809600a(24) =158118181056a(25) =470314504192