Partial sums of A029768.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =11a(5) =47a(6) =292a(7) =2368a(8) =23427a(9) =272263a(10) =3628872a(11) =54525252a(12) =911484163a(13) =16775498551a(14) =337021458884