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Search: id:A034991
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| A034991 |
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Smallest square starting with a string of n 'digit_7's. |
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+0
2
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| 729, 7744, 777924, 77774761, 77777400996, 777777594889, 77777777127241, 77777777127241, 7777777771566496516, 7777777777144230025, 777777777770200337601, 777777777777430543201344, 77777777777778331004281924, 77777777777777489970787004164, 7777777777777771308012741325056, 777777777777777744351960257494201, 7777777777777777716034080781138596
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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David Wells, 'Curious and Interesting Numbers', Penguin Books 1988, p. 184.
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CROSSREFS
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Cf. A034990.
Sequence in context: A017163 A017379 A067477 this_sequence A017499 A017631 A016758
Adjacent sequences: A034988 A034989 A034990 this_sequence A034992 A034993 A034994
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 1998.
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EXTENSIONS
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More terms from Francisco Salinas (franciscodesalinas(AT)hotmail.com), Dec 23 2001
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