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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.

A178537 a(n) = (2n+1)^(2n+1) mod 2^(2n+1).

Table of values

n a(n)
0 1
1 3
2 21
3 119
4 329
5 339
6 1533
7 2031
8 67857
9 68491
10 1472837
11 7105255
12 20933977
13 91061443
14 344607757
15 137379807
16 942687265
17 22093239035
18 115763405909
19 23058549975
20 581930881897
21 8126485230643
22 18131637168157
23 69459897210831
24 12202023051569
25 1785877136688747
26 4676672234192229
27 4337085752026823
28 51543753266508665
29 431102794881380259
30 338696479165696557

List of values

[1, 3, 21, 119, 329, 339, 1533, 2031, 67857, 68491, 1472837, 7105255, 20933977, 91061443, 344607757, 137379807, 942687265, 22093239035, 115763405909, 23058549975, 581930881897, 8126485230643, 18131637168157, 69459897210831, 12202023051569, 1785877136688747, 4676672234192229, 4337085752026823, 51543753266508665, 431102794881380259, 338696479165696557]

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

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