Number of permutations of n elements not cyclically containing the consecutive pattern 123.
A232864
Number of permutations of n elements not cyclically containing the consecutive pattern 123.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =12a(5) =45a(6) =234a(7) =1323a(8) =8856a(9) =65529a(10) =543510a(11) =4937031a(12) =49030596a(13) =526930677a(14) =6101871426a(15) =75686176035
External references
- oeis: A232864