a(n) is the sum of the base-b representations of n for 2 <= b <= n+1 read in base ten.

Terms

a(0) =0a(1) =1a(2) =12a(3) =24a(4) =125a(5) =139a(6) =169a(7) =185a(8) =1096a(9) =1191a(10) =1223a(11) =1243a(12) =1369a(13) =1391a(14) =1425a(15) =1461a(16) =10442a(17) =10468a(18) =10585a(19) =10613a(20) =10741a(21) =10781a(22) =10819a(23) =10851a(24) =11789a(25) =11878a(26) =11918a(27) =12732a(28) =12862a(29) =12900