'Connected' alternating sign n X n matrices, i.e., not made from smaller blocks.

A051055

'Connected' alternating sign n X n matrices, i.e., not made from smaller blocks.

Terms

    a(0) =0a(1) =1a(2) =0a(3) =1a(4) =2a(5) =59a(6) =1092a(7) =51412a(8) =3420384a(9) =382912420a(10) =68021283668

External references