Number of 3X3 0..n arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.

A187522

Number of 3X3 0..n arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.

Terms

    a(0) =6a(1) =98a(2) =450a(3) =1590a(4) =3426a(5) =8546a(6) =13992a(7) =26158a(8) =41748a(9) =67588a(10) =90082a(11) =148792a(12) =187474a(13) =260222a(14) =355100a(15) =480620a(16) =569610a(17) =778354a(18) =903974a(19) =1192760a(20) =1466488a(21) =1766846a(22) =1994060a(23) =2603040a(24) =2993262a(25) =3493594a(26) =4070056a(27) =4892770a(28) =5366122a(29) =6633208

External references