

A215693


English flagpole sequence (see comments)


2



1, 7, 3, 6, 5, 11, 8, 9, 2, 13, 4, 10, 12, 16, 15, 26, 14, 18, 17, 19, 20, 111, 21, 25, 22, 23, 24, 28, 38, 30, 27, 29, 31, 37, 33, 32, 42, 34, 35, 36, 39, 40, 41, 43, 45, 47, 44, 46, 54, 48, 49, 51, 57, 50, 52, 53, 112, 55, 58, 56, 59, 60, 61, 63, 65, 67, 64, 62, 74, 66, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 79, 86, 84, 81, 94, 83, 80, 82, 85, 87, 88, 89, 98, 93, 90, 91, 92, 95, 96, 97, 105, 99, 100, 102, 101, 103, 104, 106, 108, 107, 109, 110, 113
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OFFSET

1,2


COMMENTS

a(1) = 1, fp = "one"; a(2) = smallest number not yet used whose English numberword contains letter #2 of fp (= 7, seveN), fp = "oneseven"; a(3) = smallest number not yet used whose English numberword contains letter #3 of fp (= 3, thrEe), fp = "oneseventhree"; etc. Numberword spaces, hyphens, commas, and the conjunctive 'and' are ignored.


LINKS

E. Angelini, Flagpole [Cached copy, with permission]


EXAMPLE

Term #30419 of our sequence is 30419. The positions of the appended "thirtythousandfourhundrednineteen" in fp are letters #999990 to #1000022. Letters #1000000  #1000004 of fp are S, A, N, D, F. At 999999, all numbers up to 999999 (and no numbers beyond) have been used. Therefore a(1000000)  a(1000004) are 1000006 (one million Six), 1001000 (one million one thousAnd), 1000000 (oNe million), 1000100 (one million one hunDred), and 1000004 (one million Four).


CROSSREFS



KEYWORD

nonn,word


AUTHOR



STATUS

approved



