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%I #15 Jun 22 2022 01:39:51
%S 3,3,4,7,15,26,64,132,253,498,1033,2027,4089,8141,16416,32715,65722,
%T 131374,262159,524211,1048630,2097291,4195039,8387885
%N a(n) = A070952(2^n).
%C Arises from studying behavior of 1-D CA defined by Rule 30 when started with a single ON cell.
%C I would very much like to see a recurrence or formula.
%C Subtracting 2^n gives 2, 1, 0, -1, -1, -6, 0, 4, -3, -14, 9, -21, -7, -51, ...
%Y Cf. A070952, A246024, A246597.
%K nonn,more
%O 0,1
%A _N. J. A. Sloane_, Aug 14 2014
%E a(14)-a(23) from _Hiroaki Yamanouchi_, Sep 12 2014
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