Half the number of (n+1)X4 0..3 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
A183974
Half the number of (n+1)X4 0..3 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
Terms
- a(0) =7688a(1) =180236a(2) =4470575a(3) =124987628a(4) =3536846184a(5) =104681141079
External references
- oeis: A183974