T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A223041
T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =8a(5) =5a(6) =11a(7) =98a(8) =105a(9) =15a(10) =34a(11) =1265a(12) =3780a(13) =1585a(14) =51a(15) =131a(16) =17356a(17) =229437a(18) =255943a(19) =23107a(20) =187a(21) =438a(22) =241583a(23) =8580619a(24) =42964721a(25) =10904199a(26) =353631a(27) =715a(28) =2150a(29) =3395532
External references
- oeis: A223041