%I #2 Mar 30 2012 18:59:21
%S 1,2,5,10,10,13,16,25,40,42,51,49,65,58,83,94,108,143,141,208,184,294,
%T 241,333,319,486,424,689,559,959,744,1082,990,1251,1319,1470,1478,
%U 1765,2047,2144,2330,2649,2707,2900,2874,3011,3096,3455
%N Diagonal sums of a Collatz triangle.
%C Diagonal sums of A138895.
%F a(n)=sum{k=0..floor(n/2), A092892(n-2k)}
%K easy,nonn
%O 0,2
%A _Paul Barry_, Mar 31 2008, Apr 02 2008