Number of nX7 arrays of permutations of 7 copies of 0..n-1 with every element equal to or 1 greater than any west or northeast neighbors modulo n and the upper left element equal to 0.
A267741
Number of nX7 arrays of permutations of 7 copies of 0..n-1 with every element equal to or 1 greater than any west or northeast neighbors modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =1716a(2) =3057a(3) =18899a(4) =114323a(5) =649089a(6) =3562990a(7) =19473397a(8) =106720862a(9) =587093497a(10) =3242425329a(11) =17979553213a(12) =100111504811a(13) =559802224778
External references
- oeis: A267741