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Search: id:A006716
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| A006716 |
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Squares with digits 1, 4, 9 (probably finite).
(Formerly M3369)
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+0
7
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| 1, 4, 9, 49, 144, 441, 1444, 11449, 44944, 991494144, 4914991449, 149991994944, 9141411499911441, 199499144494999441, 9914419419914449449, 444411911999914911441, 419994999149149944149149944191494441
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
I. Vardi, Computational Recreations in Mathematica. Addison-Wesley, Redwood City, CA, 1991, p. 234.
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LINKS
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P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
A. Ottens, The arithmetic-digits-squares-three.digits problem
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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CROSSREFS
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Cf. A027675 (square roots), A061269.
Adjacent sequences: A006713 A006714 A006715 this_sequence A006717 A006718 A006719
Sequence in context: A061867 A019544 A053059 this_sequence A068809 A110481 A030088
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KEYWORD
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nonn,base,fini
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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a(13) corrected by Neven Juric (neven.juric(AT)apis-it.hr), May 14, 2003
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