a(n) = coefficient of the term that is independent of 2^(1/3) and 2^(2/3) in the expansion of (2^(1/3) + 2^(2/3))^n.
A377117
a(n) = coefficient of the term that is independent of 2^(1/3) and 2^(2/3) in the expansion of (2^(1/3) + 2^(2/3))^n.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =6a(4) =24a(5) =60a(6) =180a(7) =504a(8) =1440a(9) =4104a(10) =11664a(11) =33264a(12) =94608a(13) =269568a(14) =767232a(15) =2185056a(16) =6220800a(17) =17713728a(18) =50435136a(19) =143607168a(20) =408893184a(21) =1164253824a(22) =3315002112a(23) =9438882048a(24) =26875535616a(25) =76523304960a(26) =217886505984a(27) =620393043456
External references
- oeis: A377117