Number of nX2 arrays containing 2 copies of 0..n-1 with no element 1 greater than its north, west or northwest neighbor modulo n and the upper left element equal to 0.
A266830
Number of nX2 arrays containing 2 copies of 0..n-1 with no element 1 greater than its north, west or northwest neighbor modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =11a(4) =314a(5) =16904a(6) =1344296a(7) =145081212a(8) =20235221346
External references
- oeis: A266830