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.

A379438 Triangle read by rows: T(n,k) is the number of sensed combinatorial maps with n edges and genus k, 0 <= k <= floor(n/2).

Table of values

n a(n)
0 1
1 2
2 4
3 1
4 14
5 6
6 57
7 46
8 4
9 312
10 452
11 106
12 2071
13 4852
14 2382
15 131
16 15030
17 52972
18 46680
19 8158
20 117735
21 587047
22 830848
23 313611
24 14118
25 967850
26 6550808
27 13804864
28 9326858
29 1369446
30 8268816
31 73483256
32 218353000
33 236095958
34 74803564
35 2976853
36 72833730
37 827801468
38 3328822880
39 5345316004
40 3023693380
41 391288854

List of values

[1, 2, 4, 1, 14, 6, 57, 46, 4, 312, 452, 106, 2071, 4852, 2382, 131, 15030, 52972, 46680, 8158, 117735, 587047, 830848, 313611, 14118, 967850, 6550808, 13804864, 9326858, 1369446, 8268816, 73483256, 218353000, 236095958, 74803564, 2976853, 72833730, 827801468, 3328822880, 5345316004, 3023693380, 391288854]

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

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