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 A111706 a(n) = concatenation of k times the k-th digit of n. 0
 1, 2, 3, 4, 5, 6, 7, 8, 9, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 120, 121, 122, 123, 124, 125, 126 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The obvious pattern only holds until a(149) = 389; a(150) = 3100. - Joshua Zucker, May 08 2006 LINKS EXAMPLE a(12) = {concatenation 2*1, 1*2}= 22. a(111)= 321. a(12345) = 58985. CROSSREFS Sequence in context: A217556 A249873 A102491 * A118761 A024657 A140281 Adjacent sequences:  A111703 A111704 A111705 * A111707 A111708 A111709 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy, Aug 22 2005 EXTENSIONS More terms from Joshua Zucker, May 08 2006 STATUS approved

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Last modified February 17 02:22 EST 2020. Contains 331976 sequences. (Running on oeis4.)