Number of nX6 arrays of permutations of 6 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.
A267740
Number of nX6 arrays of permutations of 6 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) =462a(2) =786a(3) =3428a(4) =14138a(5) =55105a(6) =211044a(7) =807164a(8) =3087973a(9) =11817336a(10) =45232264a(11) =173151134a(12) =662878034a(13) =2537840433a(14) =9716563504a(15) =37202855866a(16) =142447146042a(17) =545436779876
External references
- oeis: A267740