%I
%S 2,4,6,14,20,23,33,35,37,43,46,50,60,64,66,76,90,93,103,105,116,127,
%T 140,144,147,154,163,167,200,206,215,247,275,285,287,293,295,303,313,
%U 323,337,340,344,363,365,410,427,430,433,435,440,476,483,495,497,523,527,533,536,555,566,596,623,625,665,667,676,694,696,714,747,757
%N Numbers n for which A277911(n) = n+1.
%H Antti Karttunen, <a href="/A277909/b277909.txt">Table of n, a(n) for n = 1..481</a>
%o (Scheme, with _Antti Karttunen_'s IntSeqlibrary)
%o (define A277909 (MATCHINGPOS 1 1 (lambda (n) (= (A277911 n) (+ 1 n)))))
%Y Odd bisection of A277908.
%Y One less than A277910.
%Y Cf. A277911.
%K nonn
%O 1,1
%A _Antti Karttunen_, Nov 05 2016
