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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.

A083848 a(n)^2 + 1 is largest prime of the form x^2 + 1 <= 2^n.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 4
6 6
7 10
8 14
9 20
10 26
11 40
12 56
13 90
14 126
15 180
16 250
17 350
18 496
19 716
20 1010
21 1440
22 2034
23 2896
24 4086
25 5774
26 8184
27 11566
28 16380
29 23166
30 32766
31 46326
32 65534
33 92666
34 131070
35 185354
36 262130
37 370714
38 524260
39 741454
40 1048554
41 1482904
42 2097146

List of values

[1, 1, 2, 2, 4, 6, 10, 14, 20, 26, 40, 56, 90, 126, 180, 250, 350, 496, 716, 1010, 1440, 2034, 2896, 4086, 5774, 8184, 11566, 16380, 23166, 32766, 46326, 65534, 92666, 131070, 185354, 262130, 370714, 524260, 741454, 1048554, 1482904, 2097146]

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

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