Number of permutations in S_n with longest increasing subsequence of length <= 6.
A052399
Number of permutations in S_n with longest increasing subsequence of length <= 6.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =120a(6) =720a(7) =5039a(8) =40270a(9) =361302a(10) =3587916a(11) =38957991a(12) =457647966a(13) =5763075506a(14) =77182248916
External references
- oeis: A052399