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A053891
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Squares composed of digits {1,3,4}.
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2
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1, 4, 144, 441, 1444, 1411344, 431434441, 1441113444, 11414343334144, 134433311433444, 4334114143334143111441, 14431113411144114144433444, 331413131434411141441331411344, 444341333431434111311131411343131143441
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| Author?, Source(txt)
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
H. Mishima, Sporadic tridigital solutions
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FORMULA
| a(n) = A053890(n)^2.
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CROSSREFS
| Cf. A053890.
Sequence in context: A083688 A053899 A058414 * A053897 A017294 A134631
Adjacent sequences: A053888 A053889 A053890 * A053892 A053893 A053894
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KEYWORD
| nonn,base
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.
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EXTENSIONS
| More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
One more term from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Sep 03 2006
Two more terms from Mishima's page added by Max Alekseyev (maxale(AT)gmail.com), Jan 28 2012
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