Expansion of Sum_{n>=0} x^n * Sum_{k=0..n} C(n,k)^2 * x^(5*k).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =5a(8) =10a(9) =17a(10) =26a(11) =37a(12) =51a(13) =74a(14) =118a(15) =201a(16) =347a(17) =586a(18) =955a(19) =1509a(20) =2351a(21) =3682a(22) =5871a(23) =9545a(24) =15700a(25) =25851a(26) =42292a(27) =68606a(28) =110635a(29) =178190