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22.07
experimental...
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oeis-research
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Max Z. Scialabba
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7ea6dd432d
new file: oeis-research/Erich Friedman/Squares that remain squares if you decrease every digit by 1/b061844.txt
vor 9 Monaten
..
Least number k such that sigma(sigma(k) * k) > n * sigma(k) * k
7ea6dd432d
new file: oeis-research/Erich Friedman/Squares that remain squares if you decrease every digit by 1/b061844.txt
vor 9 Monaten