Number of (n+1) X (5+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).
A234561
Number of (n+1) X (5+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).
Terms
- a(0) =5506a(1) =8416a(2) =12750a(3) =23830a(4) =42982a(5) =94114a(6) =195558a(7) =479914a(8) =1108726a(9) =2964106a(10) =7385190a(11) =21074650a(12) =55254742a(13) =165527434a(14) =448561158a(15) =1392113914a(16) =3852440566a(17) =12264562666a(18) =34393441830a(19) =111531402970a(20) =315410580502
External references
- oeis: A234561