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.

A331931 The number of regions inside a hexagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.

Table of values

n a(n)
1 24
2 408
3 2268
4 8208
5 20832
6 44640
7 89214
8 154752
9 249906
10 390012
11 590658
12 824712
13 1183704
14 1580868
15 2067162
16 2770476
17 3585582
18 4397172
19 5665818
20 6827736
21 8318976
22 10209948
23 12364098
24 14395164
25 17194230
26 20216808
27 23436612
28 27124416
29 31817676
30 35516328

List of values

[24, 408, 2268, 8208, 20832, 44640, 89214, 154752, 249906, 390012, 590658, 824712, 1183704, 1580868, 2067162, 2770476, 3585582, 4397172, 5665818, 6827736, 8318976, 10209948, 12364098, 14395164, 17194230, 20216808, 23436612, 27124416, 31817676, 35516328]

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

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