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Search: id:A109688
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| A109688 |
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Smallest square that contains exactly n occurrences of the string n. |
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+0
1
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| 1, 1, 225, 343396, 44944, 505575225, 4666665969, 77770707876, 388888184881, 9499999990849
(list; graph; listen)
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OFFSET
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0,3
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EXAMPLE
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a(2)=225=15^2 since this is the first square that contains two 2's.
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CROSSREFS
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Sequence in context: A051364 A061051 A036428 this_sequence A013757 A151653 A077729
Adjacent sequences: A109685 A109686 A109687 this_sequence A109689 A109690 A109691
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KEYWORD
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base,more,nonn
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AUTHOR
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Erich Friedman (efriedma(AT)stetson.edu), Aug 07 2005
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EXTENSIONS
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Corrected and extended by Giovanni Resta (g.resta(AT)iit.cnr.it), Apr 05 2006
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