Number of permutations of length n with exactly 6 occurrences of the pattern 2-13.
A120814
Number of permutations of length n with exactly 6 occurrences of the pattern 2-13.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =2a(6) =140a(7) =3262a(8) =47802a(9) =535990a(10) =5038418a(11) =41781432a(12) =315447990a(13) =2214289350a(14) =14664659100a(15) =92612930280a(16) =562220244768
External references
- oeis: A120814