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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.

A383692 a(n) = round(Chi(n)) where Chi(x) is the cosh integral function.

Table of values

n a(n)
1 1
2 2
3 5
4 10
5 20
6 43
7 96
8 220
9 519
10 1246
11 3036
12 7480
13 18599
14 46596
15 117478
16 297780
17 758319
18 1938952
19 4975454
20 12807826
21 33063593
22 85572336
23 221983185
24 577057696
25 1502975453
26 3921470496
27 10248248560
28 26822559296
29 70299597879
30 184486604704
31 484727787984

List of values

[1, 2, 5, 10, 20, 43, 96, 220, 519, 1246, 3036, 7480, 18599, 46596, 117478, 297780, 758319, 1938952, 4975454, 12807826, 33063593, 85572336, 221983185, 577057696, 1502975453, 3921470496, 10248248560, 26822559296, 70299597879, 184486604704, 484727787984]

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

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