Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two.

A254848

Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two.

Terms

    a(0) =576a(1) =1369a(2) =2916a(3) =6889a(4) =16900a(5) =42436a(6) =103684a(7) =250000a(8) =595984a(9) =1447209a(10) =3541924a(11) =8761600a(12) =21399876a(13) =52186176a(14) =126067984a(15) =306915361a(16) =746710276a(17) =1830556225a(18) =4462774416a(19) =10904371776a(20) =26485609536a(21) =64593747409a(22) =157115518884

External references