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) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 18 |
4 | 54 |
5 | 160 |
6 | 476 |
7 | 1416 |
8 | 4212 |
9 | 12528 |
10 | 37264 |
11 | 110840 |
12 | 329688 |
13 | 980640 |
14 | 2916864 |
15 | 8676064 |
16 | 25806512 |
17 | 76760160 |
18 | 228319200 |
19 | 679123872 |
20 | 2020019488 |
21 | 6008445440 |
22 | 17871816000 |
23 | 53158809600 |
24 | 158118181056 |
25 | 470314504192 |
26 | 1398926621696 |
27 | 4161036233088 |