Sequences Quadratic

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Difficult

Q1) What is the nth term of -1,2,7,14,23...
Q1) What is the nth term of 14,25,42,65,94...
Q1) What is the 14th term of 7,15,27,43,63...
Q2) What is the nth term of 3,6,11,18,27...
Q2) What is the nth term of -11,-6,5,22,45...
Q2) What is the 10th term of 16,30,50,76,108...
Q3) What is the nth term of 10,13,18,25,34...
Q3) What is the nth term of 3,16,35,60,91...
Q3) What is the 13th term of -5,-4,1,10,23...
Q4) What is the nth term of -7,-4,1,8,17...
Q4) What is the nth term of 2,13,30,53,82...
Q4) What is the 19th term of 7,16,29,46,67...
Q5) What is the nth term of 5,12,21,32,45...
Q5) What is the nth term of -8,-4,4,16,32...
Q5) What is the 13th term of 1,15,35,61,93...
Q6) What is the nth term of -6,-3,2,9,18...
Q6) What is the nth term of 14,26,44,68,98...
Q6) What is the 16th term of 15,24,37,54,75...
Q7) What is the nth term of -2,1,6,13,22...
Q7) What is the nth term of -3,6,19,36,57...
Q7) What is the 15th term of -6,-2,6,18,34...
Q8) What is the nth term of -1,0,3,8,15...
Q8) What is the nth term of -9,-8,-3,6,19...
Q8) What is the 10th term of 7,9,15,25,39...
Q9) What is the nth term of -2,-2,0,4,10...
Q9) What is the nth term of 0,9,22,39,60...
Q9) What is the 16th term of 5,10,21,38,61...
Q10) What is the nth term of 9,20,33,48,65...
Q10) What is the nth term of 6,10,20,36,58...
Q10) What is the 12th term of -10,-4,8,26,50...