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A053929 Squares composed of digits {2,5,9}. 2
9, 25, 225, 529, 5929, 29929, 55225, 99225, 2295225, 5929225, 52229529, 552955225, 2952292225, 9559559529, 59299555225, 5929599995929, 9552259592929, 5255925929995225, 5555255292952225, 92922592295555529529 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) == 5 or 9 (mod 10). - Chai Wah Wu, Nov 30 2018

LINKS

Table of n, a(n) for n=1..20.

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

Author?, Source, (txt)

MATHEMATICA

Flatten[Table[Select[FromDigits /@ Tuples[{2, 5, 9}, n], IntegerQ[Sqrt[#]] &], {n, 6}]] (* Amiram Eldar, Nov 30 2018 *)

CROSSREFS

Cf. A053928.

Sequence in context: A051515 A328714 A337344 * A014760 A013397 A293720

Adjacent sequences:  A053926 A053927 A053928 * A053930 A053931 A053932

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Mar 15 2000

EXTENSIONS

One more term from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 14 2005

STATUS

approved

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Last modified September 26 23:47 EDT 2020. Contains 337378 sequences. (Running on oeis4.)