Expansion of 1/((1-x)^6 - x^6).

Terms

a(0) =1a(1) =6a(2) =21a(3) =56a(4) =126a(5) =252a(6) =463a(7) =804a(8) =1365a(9) =2366a(10) =4368a(11) =8736a(12) =18565a(13) =40410a(14) =87381a(15) =184604a(16) =379050a(17) =758100a(18) =1486675a(19) =2884776a(20) =5592405a(21) =10919090a(22) =21572460a(23) =43144920a(24) =87087001a(25) =176565486a(26) =357913941a(27) =723002336a(28) =1453179126a(29) =2906358252