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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.

A270406 Triangle read by rows: T(n,g) is the number of rooted maps with n edges and 2 faces on an orientable surface of genus g.

Table of values

n a(n)
1 1
2 5
3 22
4 10
5 93
6 167
7 386
8 1720
9 483
10 1586
11 14065
12 15018
13 6476
14 100156
15 258972
16 56628
17 26333
18 649950
19 3288327
20 2668750
21 106762
22 3944928
23 34374186
24 66449432
25 12317877
26 431910
27 22764165
28 313530000
29 1171704435
30 792534015
31 1744436
32 126264820
33 2583699888
34 16476937840
35 26225260226
36 4304016990

List of values

[1, 5, 22, 10, 93, 167, 386, 1720, 483, 1586, 14065, 15018, 6476, 100156, 258972, 56628, 26333, 649950, 3288327, 2668750, 106762, 3944928, 34374186, 66449432, 12317877, 431910, 22764165, 313530000, 1171704435, 792534015, 1744436, 126264820, 2583699888, 16476937840, 26225260226, 4304016990]

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

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