%N Fixed points of A069787: Numbers n such that A069787(n) = n.
%C Although in principle a list, the indexing of this sequence starts from zero, as 0 is always fixed by all Catalan bijections (permutations induced by bijective operations performed on A014486), so it is a trivial case, which can be skipped by considering only values from a(n>=1) onward.
%C Sequence gives also the positions of all zeros in A243492.
%H Antti Karttunen, <a href="/A243490/b243490.txt">Table of n, a(n) for n = 0..7059</a>
%o (Scheme, with _Antti Karttunen_'s IntSeq-library, two variants)
%o (define A243490 (FIXED-POINTS 0 0 A069787))
%o (define A243490 (ZERO-POS 0 0 A243492))
%Y Complement: A243489.
%Y Fixed points of A069787, positions of zeros in A243492.
%Y Cf. also A001405, A036256, A061856, A126312, A079442, A243493.
%A _Antti Karttunen_, Jun 07 2014