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A156071
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Concatenation chain arising in A156069.
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5
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OFFSET
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1,1
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COMMENTS
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a(9) is a zeroless pandigital number in base 10, with 9 digits such that every k-digit substring ( 1 <= k <= 9 ) taken from the left, is divisible by k (see A163574). - Michel Marcus, Dec 01 2013
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REFERENCES
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Matt Parker, Things to make and do in the fourth dimension, 2015, pages 7-9.
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LINKS
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Albert Franck, Puzzles, see item 7.
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CROSSREFS
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KEYWORD
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nonn,base,fini,full
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AUTHOR
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STATUS
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approved
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