%I #7 Nov 09 2015 16:15:18
%S 21,8480,18162,78495,1194707,1426107,6029619,325034101
%N a(n) = length of n-th run of even terms in A259934.
%H A. Karttunen, <a href="https://oeis.org/plot2a?name1=A263278&name2=A262516&tform1=untransformed&tform2=untransformed&shift=0&radiop1=ratio&drawlines=true">Ratio a(n)/A262516(n) drawn with OEIS Plot2-script</a>
%F a(n) = A263277((2*n)-1).
%o (Scheme) (define (A263278 n) (A263277 (+ n n -1)))
%Y Bisection of A263277.
%Y Cf. A259934, A262514, A262516.
%Y Cf. also A263253.
%K nonn,more
%O 1,1
%A _Antti Karttunen_, Nov 08 2015
|