T(n,m)=Number of (n+1)X2 0..m arrays with every 2X2 subblock commuting with each of its vertical 2X2 subblock neighbors.
A187363
T(n,m)=Number of (n+1)X2 0..m arrays with every 2X2 subblock commuting with each of its vertical 2X2 subblock neighbors.
Terms
- a(0) =16a(1) =81a(2) =21a(3) =256a(4) =83a(5) =42a(6) =625a(7) =205a(8) =277a(9) =61a(10) =1296a(11) =419a(12) =1098a(13) =367a(14) =106a(15) =2401a(16) =713a(17) =3265a(18) =1251a(19) =966a(20) =151a(21) =4096a(22) =1169a(23) =7988a(24) =3335a(25) =4895a(26) =1321a(27) =245a(28) =6561a(29) =1709
External references
- oeis: A187363