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Revision History for A304247
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing entries 1-10 | older changes
Numbers which yield a prime whenever a '2' is inserted between any single pair of adjacent digits.
(history; published version)
(history; published version)
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COMMENTS
See also A050712 where 2 is inserted between each pair of adjacent digits. - R. J. Mathar, Feb 28 2020
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LINKS
Chai Wah Wu, <a href="/A304247/b304247.txt">Table of n, a(n) for n = 1..10000</a>
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