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two part analysis equation

Data Sufficiency, Multi-Source Reasoning, Table Analysis, Graphics Interpretation, Two-Part Analysis
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by datonman » Thu Nov 12, 2015 4:24 pm
For each positive integer 'n', the quantity sn(n is lowered down next to s) is defined such that sn + 2 = (Sn)to the second power, - Sn +1. In addition, S2 = 1

In the table, select values for S1 and S4 that are jointly compatible with these conditions.
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by DavidG@VeritasPrep » Sat Nov 14, 2015 8:50 am
For each positive integer 'n', the quantity sn(n is lowered down next to s) is defined such that sn + 2 = (Sn)to the second power, - Sn +1. In addition, S2 = 1
This is a bit difficult to decipher. Can you take a broader screenshot of the question so we can see how the question writer defined the sequence?
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