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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.

A046650 Number of sensed nonseparable (2-connected) planar maps with n edges and a distinguished face of size 2.

Table of values

n a(n)
2 1
3 1
4 2
5 4
6 14
7 49
8 216
9 984
10 4862
11 24739
12 130338
13 701584
14 3852744
15 21489836
16 121525520
17 695307888
18 4019381790
19 23446201495
20 137875564710
21 816646459860
22 4868578092510
23 29196022525905
24 176022392938080
25 1066433501134560
26 6490009570139784
27 39659537885087124
28 243278423033093336
29 1497584057249141728
30 9249144367260811824

List of values

[1, 1, 2, 4, 14, 49, 216, 984, 4862, 24739, 130338, 701584, 3852744, 21489836, 121525520, 695307888, 4019381790, 23446201495, 137875564710, 816646459860, 4868578092510, 29196022525905, 176022392938080, 1066433501134560, 6490009570139784, 39659537885087124, 243278423033093336, 1497584057249141728, 9249144367260811824]

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

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