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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.

A193398 Hyper-Wiener index of a benzenoid consisting of a double-step spiral chain of n hexagons (n >= 2, s = 21; see the Gutman et al. reference).

Table of values

n a(n)
2 215
3 636
4 1557
5 3018
6 5555
7 8968
8 14225
9 20790
10 30159
11 41364
12 56525
13 74146
14 97067
15 123168
16 156105
17 193038
18 238535
19 288940
20 349829
21 416634
22 496035
23 582456
24 683777
25 793318
26 920255
27 1056708
28 1213245
29 1380690
30 1571099
31 1773904
32 2002745
33 2245566
34 2517687
35 2805468

List of values

[215, 636, 1557, 3018, 5555, 8968, 14225, 20790, 30159, 41364, 56525, 74146, 97067, 123168, 156105, 193038, 238535, 288940, 349829, 416634, 496035, 582456, 683777, 793318, 920255, 1056708, 1213245, 1380690, 1571099, 1773904, 2002745, 2245566, 2517687, 2805468]

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

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