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 A265334 Numbers n that are >= k! but < 2*k! for some k; numbers whose factorial base representation (A007623) begins with digit "1". 5
 1, 2, 3, 6, 7, 8, 9, 10, 11, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Numbers n for which A099563(n) = 1. Numbers n for which A265333(n) = 1. LINKS Antti Karttunen, Table of n, a(n) for n = 1..5915 EXAMPLE 1 is present as 1 >= 1! but < 2*1! 2 is present as 2 >= 2! but < 2*2! 3 is present as 3 >= 2! but < 2*2! 4 is not present as 4 >= 2! but not < 2*2! (and not >= 3!). PROG (Scheme, with Antti Karttunen's IntSeq-library) (define A265334 (NONZERO-POS 1 1 A265333)) CROSSREFS Cf. A007623, A099563, A265333 (characteristic function). Cf. A059590, A060112 (subsequences). Cf. also A265897, A265898. Sequence in context: A039071 A272799 A300157 * A050019 A163099 A047287 Adjacent sequences:  A265331 A265332 A265333 * A265335 A265336 A265337 KEYWORD nonn AUTHOR Antti Karttunen, Dec 25 2015 STATUS approved

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Last modified September 18 10:31 EDT 2020. Contains 337166 sequences. (Running on oeis4.)