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COMMENTS
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w is uniquely defined as the largest value such that for all n>0, a(n) is prime. - Charles R Greathouse IV, Oct 25 2006
Wright's paper uses this as an example, although the sequence is not well-defined there. The next term is probably 2^16382-35411, a 4932-digit prp. - Charles R Greathouse IV, Oct 25 2006 [Update March 2019: Samuel S. Wagstaff, Jr proves the primality of a(4), see the Baillie link for details. - Charles R Greathouse IV, Mar 27 2019]
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LINKS
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Table of n, a(n) for n=0..3.
Robert Baillie, Wright's Fourth Prime, arXiv:1705.09741 [math.NT], 2017.
Aminu Alhaji Ibrahim and Sa’idu Isah Abubaka, Aunu Integer Sequence as Non-Associative Structure and Their Graph Theoretic Properties, Advances in Pure Mathematics, 2016, 6, 409-419.
Simon Plouffe, The calculation of p(n) and pi(n), arXiv:2002.12137 [math.NT], 2020.
Paulo Ribenboim, Prime number records, Two-Year College Math. Jnl., 25 (1994), pp. 280-290.
Juan L. Varona, A Couple of Transcendental Prime-Representing Constants, arXiv:2012.11750 [math.NT], 2020.
E. M. Wright, A prime-representing function, Amer. Math. Monthly, 58 (1951), 616-618.
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