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A068137
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Smallest prime beginning and ending symmetrically with concatenation of first n natural numbers. Need not be a palindrome.
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0
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11, 12421, 1235321, 123424321, 12345254321, 1234562654321, 123456737654321, 12345678487654321, 1234567894987654321, 1234567891010987654321, 1234567891011111110987654321, 12345678910111229121110987654321
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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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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EXTENSIONS
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More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 07 2003
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STATUS
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approved
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