a(n) = determinant of the n X n matrix m(i,j) = (i+j+2)!/i!/j!.

A105187

a(n) = determinant of the n X n matrix m(i,j) = (i+j+2)!/i!/j!.

Terms

    a(0) =1a(1) =24a(2) =720a(3) =28800a(4) =1512000a(5) =101606400a(6) =8534937600a(7) =877879296000

External references