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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.

A343485 Area of the convex hull around terdragon expansion level n, measured in unit triangles.

Table of values

n a(n)
0 0
1 2
2 8
3 26
4 86
5 276
6 856
7 2586
8 7826
9 23628
10 71128
11 213546
12 641246
13 1925076
14 5777416
15 17333706
16 52006586
17 156031788
18 468115048
19 1404358266
20 4213124006
21 12639480276
22 37918617976
23 113755972026
24 341268358946
25 1023806051148
26 3071419747768
27 9214260306186

List of values

[0, 2, 8, 26, 86, 276, 856, 2586, 7826, 23628, 71128, 213546, 641246, 1925076, 5777416, 17333706, 52006586, 156031788, 468115048, 1404358266, 4213124006, 12639480276, 37918617976, 113755972026, 341268358946, 1023806051148, 3071419747768, 9214260306186]

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

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