Number of nX(n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any north, southwest or northwest neighbors modulo n and the upper left element equal to 0.
A267199
Number of nX(n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any north, southwest or northwest neighbors modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =126a(2) =26a(3) =79a(4) =300a(5) =1152a(6) =3947a(7) =13378a(8) =44030a(9) =138210a(10) =421038a(11) =1239035a(12) =3508899a(13) =9645395a(14) =25812556a(15) =67295422
External references
- oeis: A267199