G.f. satisfies: A(x) = 1/A(-x*A(x)^5).

Terms

a(0) =1a(1) =2a(2) =12a(3) =84a(4) =616a(5) =4832a(6) =42112a(7) =410368a(8) =4316800a(9) =46899648a(10) =512004480a(11) =5554843904a(12) =59657443584a(13) =633013100288