Number of permutations of 1..n with all adjacent differences <= 8 in absolute value.
A177280
Number of permutations of 1..n with all adjacent differences <= 8 in absolute value.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =120a(6) =720a(7) =5040a(8) =40320a(9) =362880a(10) =2903040a(11) =20966400a(12) =139577760a(13) =876615840a(14) =5310073200a(15) =31605605712a(16) =187515117348
External references
- oeis: A177280