A033853 Integers k such that j(k)*d(k)=phi(k), where j = A033831.
3, 15, 56, 102, 228, 234, 384, 408, 510, 864, 936, 1092, 1140, 1170, 1920, 2040, 4320, 4680, 5460
Offset: 1
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a(17)-a(19) from Sean A. Irvine, Jul 19 2020
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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