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A115704
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Triangular numbers whose digit reversal is prime; trailing zeros are permitted.
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2
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3, 91, 136, 300, 325, 703, 1081, 1378, 1711, 3160, 3655, 7750, 9730, 11026, 11476, 12880, 13861, 18145, 18721, 19900, 36046, 70876, 75466, 76636, 79003, 90100, 92665, 99235, 107416, 108811, 110215, 113050, 118828, 123256, 130816, 137026
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OFFSET
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1,1
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LINKS
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EXAMPLE
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703=T(73) and 307 is prime.
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MATHEMATICA
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Select[Accumulate[Range[600]], PrimeQ[FromDigits[ Reverse[ IntegerDigits[ #]]]]&] (* Harvey P. Dale, Sep 30 2015 *)
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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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