Number of (n+1)X4 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.
A185491
Number of (n+1)X4 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.
Terms
- a(0) =36a(1) =708a(2) =5936a(3) =59384a(4) =559188a(5) =5442964a(6) =52129536a(7) =504455124a(8) =4854725100a(9) =46887124724a(10) =451957889654
External references
- oeis: A185491