Values of A028470(n)/A000045(n+1).

Terms

a(0) =1a(1) =17a(2) =51a(3) =449a(4) =1853a(5) =12853a(6) =61557a(7) =382024a(8) =1971559a(9) =11585969a(10) =62088471a(11) =355111613a(12) =1939427729a(13) =10943439733a(14) =60338602299a(15) =338172377293