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 2.
A190946
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 2.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =10a(4) =13002a(5) =235766334
External references
- oeis: A190946