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.

A354194 Numbers k for which phi(A267099(k)) is equal to phi(k), but the number of 4m+1 and 4m+3 primes in the prime factorization of k (when counted with multiplicity) is not equal. Here A267099 is fully multiplicative involution swapping the positions of 4m+1 and 4m+3 primes, and phi is Euler totient function.

Table of values

n a(n)
1 69037
2 70807
3 76635
4 79577
5 81631
6 82425
7 88335
8 95025
9 138074
10 141614
11 149209
12 153270
13 153703
14 159154
15 163262
16 164850
17 171989
18 176670
19 177199
20 190050
21 276148
22 283228
23 298418
24 306540
25 307406
26 318308
27 326524
28 329700
29 343978
30 353340
31 354398
32 380100
33 552296
34 566456
35 596836
36 613080
37 614812
38 636616
39 653048
40 659400
41 687956

List of values

[69037, 70807, 76635, 79577, 81631, 82425, 88335, 95025, 138074, 141614, 149209, 153270, 153703, 159154, 163262, 164850, 171989, 176670, 177199, 190050, 276148, 283228, 298418, 306540, 307406, 318308, 326524, 329700, 343978, 353340, 354398, 380100, 552296, 566456, 596836, 613080, 614812, 636616, 653048, 659400, 687956]

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

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