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%I #5 Feb 09 2019 19:43:41
%S 1,2,4,10,22,46,106,406,826,2386,5950,12466,37990,141262,577486
%N Where records occur in A181157.
%C A181157(a(n)) = a(n).
%K more,nonn
%O 1,2
%A Keisuke Sato (st(AT)r3z.org), Oct 07 2010
%E a(13)-a(15) from _Charlie Neder_, Feb 07 2019