OFFSET
1,2
COMMENTS
Consider only letters, but not spaces or punctuation.
LINKS
M. F. Hasler, Table of n, a(n) for n = 1..10^4
EXAMPLE
The letters in "four" are the twelfth through fifteenth letters in "one, two, three, four, five, six, ...". The o and u, which are 13 and 14, are vowels.
PROG
(PARI) A241858_vec(N, v=Vec("aeiou"), n, s, p, o)=vector(N, j, until( setsearch(v, s[p-o]), o+#s<p++ && o+=#s+!s=[c|c<-Vec(English(n+=1)), c>"@"]); p) \\ see A052360 for English(). - M. F. Hasler, Aug 11 2020
CROSSREFS
KEYWORD
nonn,word
AUTHOR
J. Lowell, Apr 30 2014
EXTENSIONS
More terms from Alois P. Heinz, Apr 30 2014
a(62)-a(64) from M. F. Hasler, Aug 11 2020
STATUS
approved