Number of permutations of 0..n-1 with all sums of 2 through 4 adjacent terms squared respectively unique.
A147733
Number of permutations of 0..n-1 with all sums of 2 through 4 adjacent terms squared respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =624a(6) =4176a(7) =31564a(8) =271972a(9) =2654974a(10) =28246094a(11) =320329694a(12) =4116736768a(13) =54680271878
External references
- oeis: A147733