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%I #16 Dec 11 2021 02:38:05
%S 2,2,2,3,3,3,2,2,5,5,3,2,7,7,3,2,2,2,11,11,3,3,5,5,7,2,13,13,3,2,2,17,
%T 17,3,2,19,19,3,5,2,2,23,23,3,2,2,2,2,7,7,3,5,5,5,2,29,29,3,2,31,31,3,
%U 2,2,2,37,37,3,3,2,2,2,41,41,3,3,7,11,2,43,43,3,5,5,5,2,2,47,47,3,2,7
%N Smallest controlling prime when A064413(n) is computed.
%H Michael De Vlieger, <a href="/A064740/b064740.txt">Table of n, a(n) for n = 2..10000</a>
%H Michael De Vlieger, <a href="/A064740/a064740.txt">Mathematica code</a> based on Lagarias-Rains-Sloane 2002, efficiently generates this sequence.
%H J. C. Lagarias, E. M. Rains and N. J. A. Sloane, <a href="https://arxiv.org/abs/math/0204011">The EKG sequence</a>, Exper. Math. 11 (2002), 437-446; arXiv:math/0204011 [math.NT], 2002.
%H <a href="/index/Ed#EKG">Index entries for sequences related to EKG sequence</a>
%F a(n) = A020639(A073734(n)). - _Michael De Vlieger_, Dec 10 2021
%Y Cf. A064413, A064741, A064742, A064743, A020639, A073734.
%K nonn,easy
%O 2,1
%A _N. J. A. Sloane_, Oct 18 2001
%E More terms from _David Wasserman_, Aug 05 2002
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