document.write( "Question 573364: What is the Nth equation of the following pattern? \n" );
document.write( "Figure 1; 3 tiles \n" );
document.write( "Figure 2; 5 tiles \n" );
document.write( "figure 3; 7 tiles etc.\r \n" );
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document.write( "(and I know how the pattern grows, I just need to know what the equation is) \n" );
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