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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.

A341878 The number of vertices on a vesica piscis 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 2
2 5
3 19
4 65
5 203
6 429
7 963
8 1643
9 2929
10 4173
11 7179
12 9985
13 14747
14 19503
15 27043
16 34511
17 46011
18 57171
19 73339
20 87509
21 111219
22 132809
23 162459
24 190703
25 229419
26 266285
27 315041
28 361179
29 423067
30 480201
31 556451
32 627039
33 718923
34 805217
35 915091
36 1017379
37 1148595
38 1270569
39 1423907
40 1564359

List of values

[2, 5, 19, 65, 203, 429, 963, 1643, 2929, 4173, 7179, 9985, 14747, 19503, 27043, 34511, 46011, 57171, 73339, 87509, 111219, 132809, 162459, 190703, 229419, 266285, 315041, 361179, 423067, 480201, 556451, 627039, 718923, 805217, 915091, 1017379, 1148595, 1270569, 1423907, 1564359]

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

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