document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=758009>Question 758009</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find a recursive definition for 3,21,39... </SPAN>\n" );
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document.write( "Answer:\r<BR>\n" );
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document.write( "ao = 3<BR>\n" );
document.write( "an = an-1 + 18  for n>=1\r<BR>\n" );
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