The pattern is
Un = 6n2 - 7n + 1 = (6n - 1)*(n - 1) where n = 1, 2, 3, ...
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10-d=-34-5d (add 34 to each side) 44-d=-5d (add d to each side) 44=-4d (divide by -4) -11=d
The factors are: 1, 3, 9, 11, 27, 33, 81, 99, 297, and 891. The prime factorization is: 34 x 11
There are many possible answers. One such of the following: {3, 20, and 34 lots of -1}. Another is {-15, 4}
34 factorial = 295,232,799,039,604,140,847,618,609,643,520,000,000.
They are powers of 3. 729 = 36 243 = 35 81 = 34 27 = 33 9 = 32 3 = 31