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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.

A348418 a(n) is the smallest k with rank((Z/kZ)*) = n such that there are an odd number of coprime squares modulo k.

Table of values

n a(n)
0 1
1 3
2 8
3 24
4 168
5 1848
6 35112
7 807576
8 25034856
9 1076498808
10 50595443976
11 2985131194584
12 200003790037128
13 14200269092636088
14 1121821258318250952
15 93111164440414829016
16 9590449937362727388648
17 1026178143297811830585336
18 130324624198822102484337672

List of values

[1, 3, 8, 24, 168, 1848, 35112, 807576, 25034856, 1076498808, 50595443976, 2985131194584, 200003790037128, 14200269092636088, 1121821258318250952, 93111164440414829016, 9590449937362727388648, 1026178143297811830585336, 130324624198822102484337672]

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

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