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A339753
Base-ten n whose English number-word expression contains a letter making its n-th appearance in the list of consecutive positive integer number-words.
2
1, 2, 3, 11, 23, 24, 29, 31, 108, 109, 198, 199, 240, 241, 243, 244, 245, 246, 247, 248, 249, 250, 251, 453, 454, 559, 1174, 1716, 5556, 5557, 6956, 6957, 15756, 17155, 24998, 24999, 43568, 43569, 735759, 1105805, 1105806, 1105807, 1107784, 1107785, 1584503, 1584504
OFFSET
1,2
COMMENTS
Conjecture: a(494) = 1001001001001998 (for the letter 'a').
LINKS
Hans Havermann, On target (revisited)
EXAMPLE
In the list of English consecutive positive integers (one, two, three, ...)
the first 'o', the first 'n', and the first 'e' are in 'one',
the 2nd 'o' is the only such in 'two',
the 3rd 'e' is the second of two such in 'three',
the 11th 'e' is the second of three such in 'eleven',
the 23rd 't' is the third of three such in 'twenty-three',
the 24th 't' is the first of two such in 'twenty-four',
the 29th 'n' is the second of three such in 'twenty-nine',
the 31st 'n' is the only such in 'thirty-one',
the 108th 'n' is the second of two such in 'one hundred eight', ...
CROSSREFS
Cf. A339752 (digits variant).
Sequence in context: A057135 A229805 A104075 * A236168 A235634 A070174
KEYWORD
nonn,base,word,fini
AUTHOR
STATUS
approved