Number of n X 3 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero.
A222439
Number of n X 3 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero.
Terms
- a(0) =9a(1) =147a(2) =2403a(3) =39285a(4) =642249a(5) =10499787a(6) =171655443a(7) =2806303725a(8) =45878770089a(9) =750047661027
External references
- oeis: A222439