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 A107603 In the natural numbers, swap digits in pairs (even-odd). 0
 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 11, 21, 13, 41, 15, 61, 17, 81, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 3, 31, 23, 33, 43, 35, 63, 37, 83, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 5, 51, 25, 53, 45, 55, 65, 57, 85, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 7, 71, 27, 73, 47, 75 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Differs from A000027 and A107602 starting with a(10)=1. LINKS EXAMPLE 0 is even hence n = 10 => 1, n=100=>10, etc. CROSSREFS Cf. A000027, A107602. Sequence in context: A004719 A004151 A151765 * A161594 A084011 A004086 Adjacent sequences:  A107600 A107601 A107602 * A107604 A107605 A107606 KEYWORD nonn,base AUTHOR Zak Seidov, May 17 2005 STATUS approved

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Last modified April 14 21:21 EDT 2021. Contains 342962 sequences. (Running on oeis4.)