%N Numbers that have at least one leaf-child in the tree generated by edge-relation A049820(child) = parent.
%C Positions of nonzeros in A262900.
%C Numbers n such that there is at least one k such that k - d(k) = n [where d(k) is the number of divisors of k, A000005(k)], but there is no such x that x - d(x) = k, in other words, k is one of the terms of A045765.
%C Sequence A262902 sorted into ascending order, with duplicates removed.
%H Antti Karttunen, <a href="/A262901/b262901.txt">Table of n, a(n) for n = 1..10000</a>
%o (Scheme, with _Antti Karttunen_'s IntSeq-library)
%o (define A262901 (NONZERO-POS 1 0 A262900))
%Y Cf. A000005, A045765, A049820, A262900, A262902.
%Y Cf. A262903 (a subsequence).
%Y Subsequence of A236562.
%Y Cf. also A257508.
%A _Antti Karttunen_, Oct 06 2015