Number of ascent sequences of length n with exactly nine flat steps.

A242162

Number of ascent sequences of length n with exactly nine flat steps.

Terms

    a(0) =1a(1) =10a(2) =110a(3) =1100a(4) =11440a(5) =122122a(6) =1356355a(7) =15695680a(8) =189496450a(9) =2386901660a(10) =31351799908a(11) =429069944160

External references