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.

A270407 Triangle read by rows: T(n,g) is the number of rooted maps with n edges and 3 faces on an orientable surface of genus g.

Table of values

n a(n)
2 2
3 22
4 164
5 70
6 1030
7 1720
8 5868
9 24164
10 6468
11 31388
12 256116
13 258972
14 160648
15 2278660
16 5554188
17 1169740
18 795846
19 17970784
20 85421118
21 66449432
22 3845020
23 129726760
24 1059255456
25 1955808460
26 351683046
27 18211380
28 875029804
29 11270290416
30 40121261136
31 26225260226

List of values

[2, 22, 164, 70, 1030, 1720, 5868, 24164, 6468, 31388, 256116, 258972, 160648, 2278660, 5554188, 1169740, 795846, 17970784, 85421118, 66449432, 3845020, 129726760, 1059255456, 1955808460, 351683046, 18211380, 875029804, 11270290416, 40121261136, 26225260226]

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

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