66305952000domain: NAppears in sequencesPermanent of the n-th principal submatrix of A201208 (in square format).at n=11A204252a(n) = permanent of the n-th principal submatrix of the rectangular array whose odd-numbered rows are (2,1,2,1,2,1,2,1,...) and even-numbered rows are (1,2,1,2,1,2,1,2,...).at n=12A383212