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.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 18 |
5 | 70 |
6 | 600 |
7 | 4956 |
8 | 52528 |
9 | 358128 |
10 | 6654600 |
11 | 79967800 |
12 | 1453049400 |
13 | 16239408120 |
14 | 392541718660 |
15 | 5252687631660 |
16 | 108961629396480 |
17 | 1395025456201408 |
18 | 62831427044385384 |
19 | 1223872353413404344 |
20 | 37391632408971430120 |
21 | 655014723078024641640 |
22 | 27055523795138159291124 |
23 | 547691411941958414420092 |
24 | 17365164578604322437671664 |
25 | 332211955074827711097949200 |
26 | 19385342415197943809053622700 |
27 | 466687147661484232610990714436 |
28 | 18326221432646410203582181439808 |