Number of permutations of 1..n with all sums of 2 through 3 adjacent terms squared respectively unique.
A147737
Number of permutations of 1..n with all sums of 2 through 3 adjacent terms squared respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =720a(6) =4824a(7) =34968a(8) =300284a(9) =2970424a(10) =30732800a(11) =363532816a(12) =4539439318a(13) =61773731104a(14) =919276818482
External references
- oeis: A147737