Number of (n+1)X3 0..3 arrays with each element of every 2X2 subblock being the sum mod 4 of two others.
A183847
Number of (n+1)X3 0..3 arrays with each element of every 2X2 subblock being the sum mod 4 of two others.
Terms
- a(0) =107a(1) =429a(2) =1766a(3) =7453a(4) =31767a(5) =136894a(6) =591211a(7) =2568541a(8) =11149598a(9) =48599949a(10) =211414495a(11) =922928662a(12) =4019038203a(13) =17560067093a(14) =76517548422a(15) =334524327261
External references
- oeis: A183847