| a(n) = A100856(k) = A100857(k) for some k.
Primes of form n! + n + 1 (n integer) - Paolo P. Lava (paoloplava(AT)gmail.com), May 22 2006
Subset of A073309. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 02 2008]
No more terms for p<1250. [From Vincenzo Librandi, Dec 26 2010]
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