Number of 1's when k is written in base b for all b and k satisfying 2<=b<=n+1, 1<=k<=n.

Terms

a(0) =1a(1) =2a(2) =5a(3) =9a(4) =15a(5) =21a(6) =30a(7) =36a(8) =46a(9) =56a(10) =68a(11) =79a(12) =95a(13) =108a(14) =123a(15) =137a(16) =153a(17) =166a(18) =184a(19) =199a(20) =220a(21) =240a(22) =261a(23) =277a(24) =301a(25) =321a(26) =344a(27) =367a(28) =393a(29) =418