a(n) = A276075(A206296(n)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =7a(4) =28a(5) =139a(6) =822a(7) =5677a(8) =44888a(9) =400021a(10) =3966970a(11) =43328131a(12) =516782292a(13) =6682867087a(14) =93130824878