%I #7 Jul 29 2017 23:42:03
%S 1,45,325,1225,1653,2145,3321,3655,4371,7381,8911,11781,14365,17205,
%T 20301,21945,23653,25425,32131,34191,41905,44253,45451,46665,47895,
%U 54285,55611,59685,65341,68265,72771,74305,77421,87153,97461,110215
%N Terms of A073872 that do not change their position in the rearrangement; i.e., values of A073872(n) which equal n(n+1)/2.
%C Is n^2*(n^2+1)/2 in the sequence for infinitely many odd numbers n? For almost all odd n? It's in the sequence for n up to 99, except for 39, 65 and 67.
%Y Cf. A073872, A073874.
%K nonn
%O 1,2
%A _Amarnath Murthy_, Aug 16 2002
%E Edited by _Dean Hickerson_, Oct 15 2002