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%I #2 Mar 30 2012 17:22:54
%S 2,4,7,9,16,25,27,42,54,61,63,70,75,87,90,121,126,129,135,186,211,246,
%T 315,333,345,396,405,540,556,690,717,801,924,960,1080,1863,2376,2826,
%U 3900,6210,8316
%N Non-triangular numbers having a unique representation as p + t, where p is prime and t is a triangular number.
%C Conjectured to be finite. The prime terms are in A065397.
%e n=p+t: 2=2+0; 4=3+1; 7=7+0; 9=3+6; 16=13+3; 25=19+6; 27=17+10; 42=41+1; 54=53+1
%Y A132399, A154752
%K nonn
%O 1,1
%A _T. D. Noe_, Jan 21 2009