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A029993
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Squares which are palindromes in base 7.
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11
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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
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OFFSET
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1,3
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LINKS
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FORMULA
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MATHEMATICA
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pal7Q[n_]:=Module[{idn7=IntegerDigits[n, 7]}, idn7==Reverse[idn7]]; Select[Range[0, 3500]^2, pal7Q] (* Harvey P. Dale, Dec 15 2011 *)
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CROSSREFS
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Squares which are palindromes in base b: A029983 (b=2), A029985 (b=3), A029987 (b=4), A029989 (b=5), A029991 (b=6), this sequence (b=7), A029806 (b=8), A029995 (b=9), A002779 (b=10), A029997 (b=11), A029738 (b=12), A029999 (b=13), A030074 (b=14), A030075 (b=15), A029734 (b=16).
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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