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.

A353765 Numbers k for which A353749(k) is a multiple of A353749(sigma(k)), where A353749(k) = phi(k) * A064989(k), and A064989 shifts the prime factorization one step towards lower primes.

Table of values

n a(n)
1 1
2 3
3 5
4 15
5 27
6 459
7 819
8 2295
9 13923
10 69615
11 361179
12 3282147
13 6140043
14 16410735
15 30700215
16 99558459
17 277788987
18 497792295
19 1388944935

List of values

[1, 3, 5, 15, 27, 459, 819, 2295, 13923, 69615, 361179, 3282147, 6140043, 16410735, 30700215, 99558459, 277788987, 497792295, 1388944935]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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