Number of (n+1)X(1+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock equal.
A237000
Number of (n+1)X(1+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock equal.
Terms
- a(0) =256a(1) =1200a(2) =5288a(3) =26320a(4) =131280a(5) =677344a(6) =3518120a(7) =18477584a(8) =97461616a(9) =516386016a(10) =2742670088a(11) =14598685968a(12) =77817078928a(13) =415298087392
External references
- oeis: A237000