Number of consonants in n (in French).

Terms

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