T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222828
T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =8a(5) =2a(6) =11a(7) =80a(8) =80a(9) =11a(10) =34a(11) =1154a(12) =2695a(13) =1154a(14) =34a(15) =131a(16) =14388a(17) =163059a(18) =163059a(19) =14388a(20) =131a(21) =438a(22) =200082a(23) =4990235a(24) =23664739a(25) =4990235a(26) =200082a(27) =438a(28) =2150a(29) =2652496
External references
- oeis: A222828