cp's OEIS Frontend

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.

A192236 Coefficient of x in the reduction of the n-th 2nd-kind Chebyshev polynomial by x^2 -> x+1.

Table of values

n a(n)
1 2
2 4
3 12
4 36
5 102
6 296
7 856
8 2472
9 7146
10 20652
11 59684
12 172492
13 498510
14 1440720
15 4163760
16 12033488
17 34777426
18 100508628
19 290475324
20 839489268
21 2426169014
22 7011758584
23 20264358408
24 58565082744
25 169256230458
26 489159584636
27 1413697437268

List of values

[2, 4, 12, 36, 102, 296, 856, 2472, 7146, 20652, 59684, 172492, 498510, 1440720, 4163760, 12033488, 34777426, 100508628, 290475324, 839489268, 2426169014, 7011758584, 20264358408, 58565082744, 169256230458, 489159584636, 1413697437268]

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

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