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.

A377785 Number of n-node connected unsensed planar maps with an external face in which all internal faces are triangles.

Table of values

n a(n)
3 1
4 2
5 5
6 19
7 80
8 407
9 2403
10 15570
11 107366
12 773660
13 5746826
14 43693041
15 338367370
16 2660629311
17 21193182914
18 170714892489
19 1388711749891
20 11395477091396
21 94238431709661
22 784796579069288
23 6576997589788217
24 55435506835745851
25 469698698872829672
26 3998806331800289798

List of values

[1, 2, 5, 19, 80, 407, 2403, 15570, 107366, 773660, 5746826, 43693041, 338367370, 2660629311, 21193182914, 170714892489, 1388711749891, 11395477091396, 94238431709661, 784796579069288, 6576997589788217, 55435506835745851, 469698698872829672, 3998806331800289798]

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

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