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 A108709 Start to read the sequence digit by digit and erase the first "1" you encounter, then the "first "2", the first "3", etc., until the first "9"; go on from there and erase again the first "1", the first "2", etc., until "9" -- and so on, cyclically until the end of the (infinite) sequence. Concatenate what is left. The result is the concatenation of all integers of the sequence. 0
 1, 12, 13, 24, 153, 627, 4819, 5132, 6324, 7546, 8789, 9511, 23324, 65362, 74879, 514263, 847516, 879899, 5111213, 24353627, 48695132, 63247546, 87789951, 124324653, 687487951, 1263847596, 8798995112, 13241536274, 83951326324 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Fractal-like sequence. LINKS EXAMPLE Sequence starts: 1 12 13 24 153 627 4819 5132 ... Erasing cyclically digits 1 --> 9 gives: . 1. 1. 2. 1.3 .2. 4.1. 5.3. which is the pattern of the sequence itself. CROSSREFS Sequence in context: A050840 A118068 A108710 * A138821 A022102 A041292 Adjacent sequences:  A108706 A108707 A108708 * A108710 A108711 A108712 KEYWORD base,easy,nonn AUTHOR Eric Angelini, Jun 20 2005 STATUS approved

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