%I

%S 1,3,5,2,2,3,3,7,9,4,11,4,5,13,5,4,4,15,5,5,17,19,6,21,23,6,25,27,29,

%T 31,7,33,35,7,37,6,39,6,41,43,45,6,6,7,47,7,49

%N Unique m such that A024431(m) - A024431(A115407(n)) = n.

%C A024431(a(n)) - A024431(A115407(n)) = n.

%Y Cf. A115408.

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Jan 22 2006