document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1071717>Question 1071717</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the pattern?  1, -4, 9, -16  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #686665 by </B><A HREF=/tutors/aboutme.mpl?userid=math_helper><B>math_helper(2461)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_helper><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=math_helper><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=686665\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a1 = 1<BR>\n" );
document.write( "a2 = -4<BR>\n" );
document.write( "a3 = 9<BR>\n" );
document.write( "a4 = -16<BR>\n" );
document.write( " :<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5Bn%5D+=+%28-1%29%5E%28n%2B1%29%2An%5E2 ALIGN=MIDDLE  ALT=\"a%5Bn%5D+=+%28-1%29%5E%28n%2B1%29%2An%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >   (<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%3E=+1+ ALIGN=MIDDLE  ALT=\"+n+%3E=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );