Number of permutations of 1..n with all adjacent differences <= 7 in absolute value.
A177279
Number of permutations of 1..n with all adjacent differences <= 7 in absolute value.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =120a(6) =720a(7) =5040a(8) =40320a(9) =282240a(10) =1764000a(11) =10118880a(12) =54888240a(13) =289147152a(14) =1510241892a(15) =7937250452a(16) =42396685874a(17) =228146155304
External references
- oeis: A177279