T(n,k)=Number of nXk 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
A207235
T(n,k)=Number of nXk 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
Terms
- a(0) =3a(1) =9a(2) =9a(3) =23a(4) =81a(5) =23a(6) =61a(7) =529a(8) =529a(9) =61a(10) =161a(11) =3721a(12) =5853a(13) =3721a(14) =161a(15) =425a(16) =25921a(17) =79353a(18) =79353a(19) =25921a(20) =425a(21) =1121a(22) =180625a(23) =1089017a(24) =2464241a(25) =1089017a(26) =180625a(27) =1121a(28) =2957a(29) =1256641
External references
- oeis: A207235