a(n) Sum_{d|n, 1<=d<n} d*A000084(d).

Terms

a(0) =0a(1) =1a(2) =1a(3) =5a(4) =1a(5) =17a(6) =1a(7) =45a(8) =13a(9) =125a(10) =1a(11) =453a(12) =1a(13) =1265a(14) =133a(15) =4221a(16) =1a(17) =14201a(18) =1a(19) =46405a(20) =1273a(21) =155501a(22) =1a(23) =531789a(24) =121a(25) =1792809a(26) =13801a(27) =6126333a(28) =1a(29) =21032793