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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.

A352174 The number of connected Feynman graphs in phi^4 theory with n vertices, 2 external legs.

Table of values

n a(n)
0 1
1 1
2 3
3 10
4 39
5 174
6 853
7 4632
8 27607
9 180148
10 1281437
11 9896652
12 82610706
13 742066238
14 7142537105
15 73372890090
16 801485878718
17 9278500053475
18 113490189831585
19 1462634417672439
20 19811476725948185
21 281387198719498556
22 4182019967162071868
23 64912032433421243992
24 1050391945321019422595

List of values

[1, 1, 3, 10, 39, 174, 853, 4632, 27607, 180148, 1281437, 9896652, 82610706, 742066238, 7142537105, 73372890090, 801485878718, 9278500053475, 113490189831585, 1462634417672439, 19811476725948185, 281387198719498556, 4182019967162071868, 64912032433421243992, 1050391945321019422595]

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

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