a(n) = coefficient of x^n in A(x) where A(x)^2 = A( x^2/(1 - 4*x - 8*x^2) ).

A357548

a(n) = coefficient of x^n in A(x) where A(x)^2 = A( x^2/(1 - 4*x - 8*x^2) ).

Terms

    a(0) =1a(1) =2a(2) =11a(3) =50a(4) =261a(5) =1362a(6) =7344a(7) =40112a(8) =222338a(9) =1245476a(10) =7043605a(11) =40153390a(12) =230518723a(13) =1331576430a(14) =7733934030a(15) =45138530004a(16) =264596552838

External references