a(n) = A002283(n-1) + floor(A052268(n)/(1+n)).

A093851

a(n) = A002283(n-1) + floor(A052268(n)/(1+n)).

Terms

    a(0) =4a(1) =39a(2) =324a(3) =2799a(4) =24999a(5) =228570a(6) =2124999a(7) =19999999a(8) =189999999a(9) =1818181817a(10) =17499999999a(11) =169230769229

External references