Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to or 1 greater than any northeast neighbor modulo n and the upper left element equal to 0.
A267833
Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to or 1 greater than any northeast neighbor modulo n and the upper left element equal to 0.
Terms
- a(0) =1a(1) =10a(2) =91a(3) =924a(4) =10924a(5) =147340a(6) =2247540a(7) =38338680a(8) =723997540a(9) =15008679840a(10) =339055348800
External references
- oeis: A267833