a(n) is the number of 3 X n arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 7.
A264820
a(n) is the number of 3 X n arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 7.
Terms
- a(0) =1a(1) =4a(2) =59a(3) =1644a(4) =83599a(5) =6680669a(6) =731477306
External references
- oeis: A264820