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 | 4 |
3 | 18 |
4 | 112 |
5 | 810 |
6 | 7144 |
7 | 73458 |
8 | 850672 |
9 | 11069370 |
10 | 161190904 |
11 | 2575237698 |
12 | 44571447232 |
13 | 836188737930 |
14 | 16970931765064 |
15 | 368985732635538 |
16 | 8524290269083792 |
17 | 208874053200038490 |
18 | 5428866923032585624 |
19 | 149250273758730282978 |
20 | 4318265042184721248352 |