3-enumeration of n X n alternating-sign matrices.

A059477

3-enumeration of n X n alternating-sign matrices.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =9a(4) =90a(5) =2025a(6) =102060a(7) =11573604a(8) =2946308904

External references