Number of (n+1) X 2 0..4 arrays with every 2 X 2 subblock summing to 8.
A183644
Number of (n+1) X 2 0..4 arrays with every 2 X 2 subblock summing to 8.
Terms
- a(0) =85a(1) =325a(2) =1333a(3) =5725a(4) =25405a(5) =115525a(6) =535333a(7) =2517805a(8) =11982925a(9) =57575125a(10) =278766133a(11) =1358125885a(12) =6649985245a(13) =32693825125a(14) =161264049733a(15) =797557733965
External references
- oeis: A183644