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<!DOCTYPE html> <html lang="en-US"> <body> <script> var i, j, k, m; for(i=1; i<=5; i++) { document.write(i +" "); m = 4; k = i + m; for(j=1; j<i; j++) { document.write(k +" "); m--; k = k + m; } document.write("<br>"); } </script> </body> </html>
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