%I #11 May 04 2021 18:10:08
%S 1,2,1,1,1,1,4,2,3,2,3,23,24,3,20,18,84,25,43
%N Length of runs in the sequence of row/column periods of Sprague-Grundy values of Wythoff's Game (A046875).
%C a(20) >= 12. - _Sean A. Irvine_, May 02 2021
%H A. Dress, A. Flammenkamp and N. Pink, <a href="http://dx.doi.org/10.1006/aama.1998.0632">Additive periodicity of the Sprague-Grundy function of certain Nim games</a>, Adv. Appl. Math., 22, p. 249-270 (1999).
%Y Cf. A046874, A046875, A004481.
%K nonn,more
%O 1,2
%A _Achim Flammenkamp_
%E Entry revised by _Sean A. Irvine_, May 02 2021
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