Number of n X 2 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or three plus the sum of the elements diagonally to its northwest, modulo 4.
A240342
Number of n X 2 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or three plus the sum of the elements diagonally to its northwest, modulo 4.
Terms
- a(0) =4a(1) =18a(2) =78a(3) =334a(4) =1418a(5) =6002a(6) =25374a(7) =107230a(8) =453098a(9) =1914498a(10) =8089374a(11) =34180206a(12) =144422410a(13) =610231506a(14) =2578426334a(15) =10894689470a(16) =46033605738a(17) =194506954850a(18) =821855141726
External references
- oeis: A240342