Number of (n+2)X(2+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.

A253734

Number of (n+2)X(2+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically.

Terms

    a(0) =720a(1) =1888a(2) =4100a(3) =9876a(4) =25012a(5) =60296a(6) =148328a(7) =369360a(8) =917504a(9) =2284292a(10) =5685480a(11) =14168096a(12) =35364992a(13) =88266608a(14) =220224348a(15) =549719568a(16) =1372906300a(17) =3428376580a(18) =8559482304a(19) =21374102868a(20) =53382093000a(21) =133313369596a(22) =332909642184

External references