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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.

A375273 Expansion of 1/(1 - 2*x - 3*x^2 - 4*x^3 + 4*x^4).

Table of values

n a(n)
0 1
1 2
2 7
3 24
4 73
5 238
6 763
7 2436
8 7821
9 25050
10 80255
11 257200
12 824081
13 2640582
14 8461187
15 27111644
16 86872853
17 278363058
18 891946503
19 2858027016
20 9157854361
21 29344123550
22 94026132235
23 301283944500
24 965391362461
25 3093362593162
26 9911930522767
27 31760378496864

List of values

[1, 2, 7, 24, 73, 238, 763, 2436, 7821, 25050, 80255, 257200, 824081, 2640582, 8461187, 27111644, 86872853, 278363058, 891946503, 2858027016, 9157854361, 29344123550, 94026132235, 301283944500, 965391362461, 3093362593162, 9911930522767, 31760378496864]

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

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