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 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(1) = 1, fp = "one"; a(2) = smallest number not yet used whose English number-word contains letter #2 of fp (= 7, seveN), fp = "oneseven"; a(3) = smallest number not yet used whose English number-word contains letter #3 of fp (= 3, thrEe), fp = "oneseventhree"; etc. Number-word spaces, hyphens, commas, and the conjunctive 'and' are ignored. LINKS Table of n, a(n) for n=1..113. Eric Angelini, Flagpole E. Angelini, Flagpole [Cached copy, with permission] Hans Havermann, Flagpole sections (number-word terms up to 1050000) 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 Sequence in context: A073016 A238695 A019819 * A197028 A257819 A182111 Adjacent sequences: A215690 A215691 A215692 * A215694 A215695 A215696 KEYWORD nonn,word AUTHOR Eric Angelini, Hans Havermann, Aug 27 2012 STATUS approved

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Last modified February 28 12:01 EST 2024. Contains 370394 sequences. (Running on oeis4.)