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8M + 3 = (2A+1)^2 + (2B+1)^2 + (2C+1)^2
M = trinum(A) + trinum(B) + trinum(C)
# Find a triangle-number decomposition by converting to
# a Diophantine squares problem.
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
We're too uncool / not worth the trouble
What do you mean they haven't visited?
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