Number of nX4 0..6 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 7, and upper left element zero.
A230531
Number of nX4 0..6 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 7, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =272a(4) =35170a(5) =1003084a(6) =29871142a(7) =868791100a(8) =24721336666a(9) =701187061974
External references
- oeis: A230531