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One more line (Posted on 2017-05-10) Difficulty: 3 of 5
Examine the following triplets, find out the logic behind the arrangements and add another coherent line:

14; (3,431,961); 7
13; (5,121,692); 8
12; (7,291,443); 9
11; (10,001,214); 10

Your line: ……. N1;(N2);N3

Post a short comment about your process of solving.

See The Solution Submitted by Ady TZIDON    
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More of the same | Comment 3 of 4 |
Obviously N3 = 21 - N1

If you actually fit a cubic to N1, N2 its pretty messy N3, N2 is even worse
but if you remove the 10000*(perfect cube) it's not too bad.  The perfect cube is N3^3.  N2 can then be given as

10(N1)^2 - (N1) + 15 + 10000(N3)^3

If there's a simpler expression I have yet to find it



  Posted by Jer on 2017-05-10 11:53:07
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