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 A001633 Numbers with an odd number of digits. 14
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS A055642(a(n)) mod 2 = 1. - Reinhard Zumkeller, Jul 14 2014 LINKS T. D. Noe, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[0, 145], OddQ[Length[IntegerDigits[#]]] &] (* T. D. Noe, Aug 09 2012 *) PROG (Haskell) a001633 n = a001633_list !! (n-1) a001633_list = filter (odd . a055642) [0..] -- Reinhard Zumkeller, Jul 14 2014 (PARI) is(n)=#Str(n)%2 \\ Charles R Greathouse IV, Nov 26 2018 CROSSREFS Cf. A001637 (complement). Cf. A055642. Sequence in context: A271569 A239138 A298425 * A171120 A092907 A051022 Adjacent sequences:  A001630 A001631 A001632 * A001634 A001635 A001636 KEYWORD nonn,base,easy AUTHOR STATUS approved

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Last modified February 24 10:11 EST 2020. Contains 332209 sequences. (Running on oeis4.)