OFFSET
0,1
EXAMPLE
zéro 2, un 1, deux 2, trois 2, quatre 3, cinq 1, six 1, sept 1, huit 2, neuf 2, dix 1, onze 2, douze 3, treize 3, quatorze 4, quinze 3, seize 3, dix-sept 2, dix-huit 3, dix-neuf 3, vingt 1, vingt-et-un 3, vingt-deux 3, ...
CROSSREFS
KEYWORD
nonn,word,easy
AUTHOR
EXTENSIONS
More terms from Olivier Gérard, Jun 26 2001
a(60) onward corrected by Sean A. Irvine, Dec 16 2020
STATUS
approved