a(n) = Fibonacci(6, n).

Terms

a(0) =0a(1) =8a(2) =70a(3) =360a(4) =1292a(5) =3640a(6) =8658a(7) =18200a(8) =34840a(9) =61992a(10) =104030a(11) =166408a(12) =255780a(13) =380120a(14) =548842a(15) =772920a(16) =1065008a(17) =1439560a(18) =1912950a(19) =2503592a(20) =3232060a(21) =4121208a(22) =5196290a(23) =6485080a(24) =8017992a(25) =9828200a(26) =11951758a(27) =14427720a(28) =17298260a(29) =20608792