French self-ranked numbers.

Terms

a(0) =1a(1) =2a(2) =8a(3) =12a(4) =20a(5) =21a(6) =22a(7) =29a(8) =42a(9) =52a(10) =58a(11) =85a(12) =91a(13) =142a(14) =185a(15) =208a(16) =212a(17) =229a(18) =243a(19) =291a(20) =351a(21) =420a(22) =452a(23) =514a(24) =720a(25) =821a(26) =1142a(27) =1212a(28) =1243a(29) =1254