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dginev/esum_iterative.tex

Last active August 15, 2019 18:38
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esum_iterative.tex
\newcount\index
\newcount\sum
\def\esum#1{
\index=#1
\sum=0
\loop
\advance\sum by \index
\ifnum\index>2
\advance\index by -2
\repeat
\the\sum}
\esum{100}\bye
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