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.

A333118 The number of edges inside a pentagram 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 65
2 1965
3 14100
4 49760
5 130235
6 268900
7 522770
8 911425
9 1474680
10 2276820
11 3354695
12 4785575
13 6665240
14 8973795
15 11903415
16 15446945
17 19825715
18 24850460
19 31025390
20 38221130
21 46557865
22 56092005
23 67123385
24 79765335
25 94249750
26 110346520
27 128289075
28 148525930
29 171374335
30 196206590

List of values

[65, 1965, 14100, 49760, 130235, 268900, 522770, 911425, 1474680, 2276820, 3354695, 4785575, 6665240, 8973795, 11903415, 15446945, 19825715, 24850460, 31025390, 38221130, 46557865, 56092005, 67123385, 79765335, 94249750, 110346520, 128289075, 148525930, 171374335, 196206590]

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

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