OFFSET
1,1
COMMENTS
The sequence considers hyphenated names (for non-multiples of 10 between 21 and 99) and treats those as single words, hence, "twenty-one thousand twenty-one" is a term. Indeed, all numbers of the form k*10^(3*i) + k for 1 <= k <= 99 and i > 0 are terms. - Michael S. Branicky, Jun 19 2024
REFERENCES
M. J. Halm, More Sequences, Mpossibilities 83, April 2003.
LINKS
M. J. Halm, Sequences
EXAMPLE
a(1) = 101 because "one hundred one" is the first number name which is a word palindrome.
CROSSREFS
KEYWORD
easy,nonn,word
AUTHOR
Michael Joseph Halm, Apr 20 2003
EXTENSIONS
Name edited and data corrected by Michael S. Branicky, Jun 19 2024
STATUS
approved