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A181791
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Numbers with pandigital biperiod squares.
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2
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428571428571428571429, 571428571428571428572, 857142857142857142858, 363636363636363636363636363636364, 454545454545454545454545454545455, 545454545454545454545454545454546, 636363636363636363636363636363637
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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REFERENCES
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R. Ondrejka, Problem 1130: Biperiod Squares, Journal of Recreational Mathematics, Vol. 14:4 (1981-82), 299. Solution by F. H. Kierstead, Jr., JRM, Vol. 15:4 (1982-83), 311-312.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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