Number of 0's when n is written in base b for 2<=b<=n+1.

Terms

a(0) =0a(1) =1a(2) =1a(3) =3a(4) =2a(5) =3a(6) =1a(7) =5a(8) =5a(9) =5a(10) =3a(11) =6a(12) =2a(13) =3a(14) =3a(15) =8a(16) =5a(17) =9a(18) =5a(19) =8a(20) =5a(21) =4a(22) =2a(23) =9a(24) =5a(25) =5a(26) =7a(27) =9a(28) =5a(29) =8