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A029993 Squares which are palindromes in base 7. 9
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; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..32.

P. De Geest, Palindromic Squares

MATHEMATICA

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

CROSSREFS

Sequence in context: A242354 A001264 A114399 * A268066 A275123 A275217

Adjacent sequences:  A029990 A029991 A029992 * A029994 A029995 A029996

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified August 22 06:58 EDT 2017. Contains 290943 sequences.