Number of permutations of 1..n with all sums of 2 through 5 adjacent terms squared respectively unique.
A147739
Number of permutations of 1..n with all sums of 2 through 5 adjacent terms squared respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =720a(6) =4824a(7) =33912a(8) =291784a(9) =2859364a(10) =29329354a(11) =342019406a(12) =4210898288a(13) =56537197402
External references
- oeis: A147739