T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-1,-2) (-2,-1) (0,-1) or (-1,0) and new values introduced in order 0..2.
A274803
T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-1,-2) (-2,-1) (0,-1) or (-1,0) and new values introduced in order 0..2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =2a(6) =4a(7) =8a(8) =8a(9) =4a(10) =8a(11) =22a(12) =30a(13) =22a(14) =8a(15) =16a(16) =60a(17) =112a(18) =112a(19) =60a(20) =16a(21) =32a(22) =164a(23) =420a(24) =596a(25) =420a(26) =164a(27) =32a(28) =64a(29) =448
External references
- oeis: A274803