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A127303
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A doubly-fractal simple sequence. Erase the first (leftmost) digit of every integer: what is left is the sequence itself. The erased digits, one by one, form also the sequence itself.
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3
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1, 2, 11, 12, 111, 212, 1111, 1212, 11111, 21212, 111111, 221212, 1111111, 1221212, 11111111, 11221212, 111111111, 211221212, 1111111111, 2211221212
(list; graph; refs; listen; history; internal format)
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