A108987 - OEIS

%I #2 Mar 31 2012 13:46:52

%S 1,2,8,12,20,21,22,29,42,52,58,85,91,142,185,208,212,229,243,291,351,

%T 420,452,514,720,821,1142,1212,1243,1254,1391,1420,2021,2058,2124,

%U 2125,2291,2413,3514,3912,4208,4720,5212,5452,5821,8219,9121,9351,12125

%N French self-ranked numbers.

%e "1" is in the sequence because if you replace each letter of "un" ("one") by its rank in the alphabet you get the string 2114 which contains at least a "1".

%e "trois" (3) produces the string 201815919 which contains no "3" - thus "3" is not a "french self-ranked number".

%K base,easy,nonn,word

%O 0,2

%A _Eric Angelini_, Jul 28 2005