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A214423
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Numbers n palindromic in only one base b, 2 <= b <= 10.
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9
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11, 12, 13, 14, 22, 23, 25, 29, 30, 32, 34, 35, 37, 38, 41, 42, 43, 44, 48, 49, 54, 56, 59, 60, 61, 62, 64, 66, 68, 70, 71, 72, 74, 77, 81, 83, 86, 89, 97, 101, 112, 113, 117, 118, 123, 124, 125, 126, 128, 131, 136, 138, 145, 146, 148, 153, 156, 157, 161
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OFFSET
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1,1
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COMMENTS
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The base for which n is a palindrome is given in A214427.
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LINKS
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FORMULA
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EXAMPLE
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11 is palindromic only in base 10.
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MATHEMATICA
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n = -1; t = {}; While[Length[t] < 100, n++; If[Count[Table[s = IntegerDigits[n, m]; s == Reverse[s], {m, 2, 10}], True] == 1, AppendTo[t, n]]]; t
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CROSSREFS
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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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