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A301346
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Largest prime factor of A020549(n) = (n!)^2 + 1.
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1
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2, 2, 5, 37, 577, 14401, 39877, 251501, 95629553, 131681894401, 13168189440001, 1593350922240001, 2271708245569901, 38775788043632640001, 2404319663572286441, 1272170577304043929, 2938007628841577533852349, 13980942259426143240713449, 1107848353183710355135404972973, 20831587158104092560535861261
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OFFSET
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0,1
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COMMENTS
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LINKS
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FORMULA
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MAPLE
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a:= n-> max(numtheory[factorset](n!^2+1)):
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PROG
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(PARI) a(n) = vecmax(factor(n!^2 + 1)[, 1]); \\ Daniel Suteu, Jun 10 2022
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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