Permanent of the n-th principal submatrix of A204447.
A204448
Permanent of the n-th principal submatrix of A204447.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =9a(4) =24a(5) =140a(6) =792a(7) =4752a(8) =27072a(9) =230832a(10) =1991952a(11) =17927568a(12) =155644416a(13) =1780206336a(14) =20695108608a(15) =248341303296
External references
- oeis: A204448