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A155190
Non-triangular numbers having a unique representation as p + t, where p is prime and t is a triangular number.
0
2, 4, 7, 9, 16, 25, 27, 42, 54, 61, 63, 70, 75, 87, 90, 121, 126, 129, 135, 186, 211, 246, 315, 333, 345, 396, 405, 540, 556, 690, 717, 801, 924, 960, 1080, 1863, 2376, 2826, 3900, 6210, 8316
OFFSET
1,1
COMMENTS
Conjectured to be finite. The prime terms are in A065397.
EXAMPLE
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
CROSSREFS
KEYWORD
nonn
AUTHOR
T. D. Noe, Jan 21 2009
STATUS
approved