Comment on A089982; query on {A057100(n)^2} = {A009000(n)^2}

[Jonathan Post]

COMMENT FROM Jonathan Vos Post RE A089982

%I A089982
%S A089982 6, 21, 36, 55, 66, 91, 120, 136, 171, 210, 231, 276, 351,
378, 406, 496, 561, 666, 703
%N A089982 Triangular numbers that can be expressed as the sum of 2
other positive triangular numbers.
%C A089982 Intersection of triangular numbers with sumset of triangular
numbers.  Triangular number analogue of what for squares is
{A057100(n)^2} = {A009000(n)^2}. Is it possible that the latter
sequence, 25, 100,
169, 225, 289, ... is not in OEIS?
%F A089982 {A000217} INTERSECT {A000217 + A000217}.
%Y A089982 Cf. A000217, A057100.
%O A089982 1
%K A089982 ,easy,nonn,
%A A089982 Jonathan Vos Post (jvospost2 at yahoo.com), Mar 09 2007