OFFSET
0,3
COMMENTS
Two variations are possible: Not requiring monotonicity (i.e., the sequence could go: ZerO, OnE, EighT, TeN, NinE, EighteeN, NineteeN, ...), and imposing the additional constraint that the sequence does not stop right after the chosen number (so "NinetY" would be forbidden and "Ninety-onE" should be used instead). See A227865 for a French and A228442 for a German version using such rules. - M. F. Hasler, Nov 03 2013
REFERENCES
David J. Bodycombe, "Riddles of the Sphinx", apparently mentions this puzzle.
LINKS
E. Angelini, Re: A sequence in your style, SeqFan list, Nov 01 2013
EXAMPLE
ZerO, OnE, EighT, TeN, NineteeN, NinetY (ends)
CROSSREFS
KEYWORD
nonn,fini,full,word
AUTHOR
N. J. A. Sloane, Oct 31 2013, based on an email from George I. Bell, Boulder, CO.
STATUS
approved