a(0)=0; thereafter A003470(n-1) + A003470(n) - 1.

A259859

a(0)=0; thereafter A003470(n-1) + A003470(n) - 1.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =10a(4) =38a(5) =177a(6) =999a(7) =6676a(8) =51564a(9) =451585a(10) =4418555a(11) =47746686a(12) =564528978a(13) =7247396065a(14) =100378220943

External references