Number of permutations of the n*(n+1)/2 numbers (i copies of i | i=1..n), with no element equal to another within a distance of 3.
A190947
Number of permutations of the n*(n+1)/2 numbers (i copies of i | i=1..n), with no element equal to another within a distance of 3.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =13002a(6) =11471355944
External references
- oeis: A190947