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From table of maximal epacts e(p) and corresponding primes p, for x_1=2, x_{m+1} = (x_m)^2+1; sequence gives e(p).
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%I #4 Mar 30 2012 16:45:58

%S 2,3,4,6,8,12,14,18,25,28,30,32,45,55,56,76,86,89,132,142,146,150,156,

%T 168,180,196,212,228,233,252,312

%N From table of maximal epacts e(p) and corresponding primes p, for x_1=2, x_{m+1} = (x_m)^2+1; sequence gives e(p).

%D R. K. Guy, How to factor a number, Proc. 5th Manitoba Conf. Numerical Math., Congress. Num. 16 (1975), 49-89.

%Y Cf. A014424.

%K nonn

%O 1,1

%A _N. J. A. Sloane_.