Row 2 of array in A144502.

Terms

a(0) =2a(1) =7a(2) =30a(3) =155a(4) =946a(5) =6687a(6) =53822a(7) =486355a(8) =4877250a(9) =53759351a(10) =646098622a(11) =8409146187a(12) =117836551730