Number of n-digit numbers using digits 0 to n-1 each exactly once and containing no 3-digit sequence in increasing or decreasing order.
A104854
Number of n-digit numbers using digits 0 to n-1 each exactly once and containing no 3-digit sequence in increasing or decreasing order.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =27a(5) =106a(6) =483a(7) =2498a(8) =14487a(9) =93106a(10) =657063a(11) =5051738a(12) =42033747a(13) =376353706a(14) =3608153643a(15) =36879266978a(16) =400339173807
External references
- oeis: A104854