223560000

Appears in sequences

• Permanent of the n-th principal submatrix of A201208 (in square format).at n=9A204252
• a(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=10A383212