Number of permutations of [n] with exactly two (possibly overlapping) occurrences of the consecutive pattern 3412.
A264321
Number of permutations of [n] with exactly two (possibly overlapping) occurrences of the consecutive pattern 3412.
Terms
- a(0) =1a(1) =23a(2) =379a(3) =5706a(4) =84354a(5) =1266150a(6) =19621124a(7) =316459848a(8) =5331647951a(9) =93959680785
External references
- oeis: A264321