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A029994 Numbers n such that n^2 is palindromic in base 9. 1
0, 1, 2, 10, 20, 82, 91, 100, 164, 730, 820, 1460, 6562, 6643, 6724, 7300, 7381, 7462, 13124, 13642, 13660, 14281, 54050, 59050, 59860, 65620, 66430, 118100, 123010, 126286, 161410, 161896, 487750, 531442, 532171 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..35.

P. De Geest, Palindromic Squares

MATHEMATICA

pb9Q[n_]:=Module[{idn=IntegerDigits[n^2, 9]}, idn==Reverse[idn]]; Select[ Range[0, 600000], pb9Q] (* Harvey P. Dale, Sep 29 2013 *)

CROSSREFS

Sequence in context: A120552 A090220 A164882 * A261660 A004643 A284213

Adjacent sequences:  A029991 A029992 A029993 * A029995 A029996 A029997

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified March 30 05:12 EDT 2017. Contains 284297 sequences.