trizen
f2bf689bee
new file: oeis-research/Amiram Eldar/Number of primitive abundant numbers (A071395) < 10^n/generate.sf
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il y a 4 mois | |
|---|---|---|
| .. | ||
| Even numbers k such that k^2 - 1 is a powerful number | il y a 4 mois | |
| Solutions to sigma(n)+7 = sigma(n+7) | il y a 1 an | |