T(n,k)=1/81 the number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.
A183819
T(n,k)=1/81 the number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =8a(2) =8a(3) =64a(4) =162a(5) =64a(6) =512a(7) =3256a(8) =3256a(9) =512a(10) =4096a(11) =65640a(12) =163208a(13) =65640a(14) =4096a(15) =32768a(16) =1321860a(17) =8231592a(18) =8231592a(19) =1321860a(20) =32768a(21) =262144a(22) =26630220a(23) =414246824a(24) =1042063656a(25) =414246824a(26) =26630220a(27) =262144a(28) =2097152a(29) =536415300
External references
- oeis: A183819