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A029993 Squares which are palindromes in base 7. 0
0, 1, 4, 16, 64, 100, 121, 400, 1024, 1600, 2500, 3249, 4096, 6400, 25600, 40000, 118336, 160000, 250000, 302500, 310249, 532900, 1000000, 1893376, 2050624, 3579664, 5769604, 6007401, 6250000, 7573504, 7845601, 11833600 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

P. De Geest, Palindromic Squares

MATHEMATICA

pal7Q[n_]:=Module[{idn7=IntegerDigits[n, 7]}, idn7==Reverse[idn7]]; Select[Range[0, 3500]^2, pal7Q] (* From Harvey P. Dale, Dec 15 2011 *)

CROSSREFS

Sequence in context: A061283 A001264 A114399 * A158988 A027676 A177398

Adjacent sequences:  A029990 A029991 A029992 * A029994 A029995 A029996

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 13 05:39 EST 2012. Contains 205436 sequences.