document.write( "Question 307087: What is the formula for the following sequence:\r
\n" ); document.write( "\n" ); document.write( "12, 42, 92, 162,...
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Algebra.Com's Answer #219778 by richwmiller(17219)\"\" \"About 
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a_n = 2*(5n^2+1)
\n" ); document.write( "Sorry but 16 is not the first digit of 162
\n" ); document.write( "2*(5*5^2+1)=2*(5*25+1)
\n" ); document.write( "2*(126)=252
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