cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A303900 Numbers k such that the average of all strong divisors of all positive integers <= k is an integer.

Original entry on oeis.org

2, 8, 12, 16, 67, 924122, 1067239
Offset: 1

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Author

Ilya Gutkovskiy, May 02 2018

Keywords

Comments

We say d is a strong divisor of k iff d is a divisor of k and d > 1.
Numbers k such that A002541(k) | A024917(k).
a(8) > 10^12. - Giovanni Resta, May 05 2018

Links

Crossrefs

Cf. A024917, A027750, A032741, A039653, A056550, A226647, A284288, A284755, A303480, A303482, A303659.

Extensions

a(3)-a(7) corrected by Daniel Suteu, May 03 2018
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