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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.

A003122 Number of Hamiltonian rooted triangulations with n internal nodes and 3 external nodes.

Table of values

n a(n)
0 1
1 3
2 18
3 136
4 1170
5 10962
6 109158
7 1138032
8 12298392
9 136803060
10 1558392462
11 18110005704
12 214056200904
13 2567339253864
14 31186302919290
15 383088799324192
16 4752646170647124
17 59485067001886392
18 750454803914305388
19 9535654298173667520
20 121954511767711578480
21 1568979034333191541588
22 20295073846979967634038

List of values

[1, 3, 18, 136, 1170, 10962, 109158, 1138032, 12298392, 136803060, 1558392462, 18110005704, 214056200904, 2567339253864, 31186302919290, 383088799324192, 4752646170647124, 59485067001886392, 750454803914305388, 9535654298173667520, 121954511767711578480, 1568979034333191541588, 20295073846979967634038]

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

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