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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.

A378342 Number of n edge connected achiral planar maps with an external face in which all internal faces are triangles.

Table of values

n a(n)
3 1
4 0
5 1
6 2
7 1
8 4
9 6
10 7
11 15
12 22
13 33
14 59
15 94
16 140
17 249
18 388
19 617
20 1040
21 1675
22 2628
23 4481
24 7108
25 11494
26 19030
27 30885
28 49315
29 82559
30 132406
31 215326
32 353923
33 576552
34 928437
35 1539504
36 2485102
37 4051828
38 6636368
39 10830526
40 17524893
41 28903185
42 46838466
43 76464837
44 125019717

List of values

[1, 0, 1, 2, 1, 4, 6, 7, 15, 22, 33, 59, 94, 140, 249, 388, 617, 1040, 1675, 2628, 4481, 7108, 11494, 19030, 30885, 49315, 82559, 132406, 215326, 353923, 576552, 928437, 1539504, 2485102, 4051828, 6636368, 10830526, 17524893, 28903185, 46838466, 76464837, 125019717]

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

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