Generalized Stirling numbers, [n+2,3]_2: a(n) = n! * Sum_{k=0..n-1} (k+1)/(n-k).

A001705

Generalized Stirling numbers, [n+2,3]_2: a(n) = n! * Sum_{k=0..n-1} (k+1)/(n-k).

Terms

    a(0) =0a(1) =1a(2) =5a(3) =26a(4) =154a(5) =1044a(6) =8028a(7) =69264a(8) =663696a(9) =6999840a(10) =80627040a(11) =1007441280a(12) =13575738240a(13) =196287356160

External references