Number of permutations of length n with 2 consecutive ascending pairs.
A000274
Number of permutations of length n with 2 consecutive ascending pairs.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =3a(4) =18a(5) =110a(6) =795a(7) =6489a(8) =59332a(9) =600732a(10) =6674805a(11) =80765135a(12) =1057289046a(13) =14890154058a(14) =224497707343
External references
- oeis: A000274