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A030174 Squares composed of digits {1,2,3}. 2
1, 121, 12321, 1322122321, 132233322321, 213223221121, 13223121322321, 1212111311221321, 131332121232312121, 31121322221111133211321, 3322133322121313132333322321, 12232213113321121113332133323121 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

Author?, Source(txt)

Hisanori Mishima, Sporadic tridigital solutions

CROSSREFS

Cf. A030175.

Sequence in context: A173426 A080162 A068117 * A180153 A178510 A066625

Adjacent sequences:  A030171 A030172 A030173 * A030175 A030176 A030177

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

EXTENSIONS

More terms from the author, Mar 15, 2000.

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 14 2005

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Last modified February 13 09:55 EST 2012. Contains 205451 sequences.