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A105293
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Smallest prime formed by reverse concatenation of n consecutive triangular numbers, 0 if no such prime exists.
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0
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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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a(3)=631 because 631 is the smallest prime formed by reverse concatenation of 3 consecutive triangular numbers i.e. 1,3 and 6.
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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