T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically.
A232431
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically.
Terms
- a(0) =4a(1) =16a(2) =16a(3) =64a(4) =192a(5) =64a(6) =240a(7) =1632a(8) =1632a(9) =240a(10) =988a(11) =14592a(12) =33708a(13) =14592a(14) =988a(15) =3964a(16) =132980a(17) =650696a(18) =650696a(19) =132980a(20) =3964a(21) =15844a(22) =1222708a(23) =14465384a(24) =31127576a(25) =14465384a(26) =1222708a(27) =15844a(28) =63808a(29) =11215820
External references
- oeis: A232431