a(n) = Sum_{k=0..floor(n/2)} (-1)^(k-1)*(k-1)^2*A106828(n, k).

A348208

a(n) = Sum_{k=0..floor(n/2)} (-1)^(k-1)*(k-1)^2*A106828(n, k).

Terms

    a(0) =-1a(1) =0a(2) =0a(3) =0a(4) =-3a(5) =-20a(6) =-70a(7) =-84a(8) =1267a(9) =18824a(10) =209484a(11) =2284920a(12) =26010369a(13) =314864628a(14) =4073158102a(15) =56304102596a(16) =830061867975

External references