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 A102490 Numbers in base-16 representation that cannot be written with decimal digits. 6
 10, 11, 12, 13, 14, 15, 26, 27, 28, 29, 30, 31, 42, 43, 44, 45, 46, 47, 58, 59, 60, 61, 62, 63, 74, 75, 76, 77, 78, 79, 90, 91, 92, 93, 94, 95, 106, 107, 108, 109, 110, 111, 122, 123, 124, 125, 126, 127, 138, 139, 140, 141, 142, 143, 154, 155, 156, 157, 158, 159, 160 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 Eric Weisstein's World of Mathematics, Hexadecimal Wikipedia, Hexadecimal EXAMPLE 42 = 2*16^1 + 10*16^0 = '2A', therefore 42 is a term. PROG (Haskell) import Data.List (unfoldr) a102490 n = a102490_list !! (n-1) a102490_list = filter (any (> 9) . unfoldr    (\x -> if x == 0 then Nothing else Just \$ swap \$ divMod x 16)) [0..] -- Reinhard Zumkeller, Jun 27 2013 CROSSREFS Complement of A102489; A102488, A102492, A102494. Sequence in context: A173688 A008709 A008708 * A057947 A228774 A073527 Adjacent sequences:  A102487 A102488 A102489 * A102491 A102492 A102493 KEYWORD nonn,base AUTHOR Reinhard Zumkeller, Jan 12 2005 STATUS approved

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Last modified June 4 07:43 EDT 2020. Contains 334822 sequences. (Running on oeis4.)