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 | 7 |
| 2 | 13 |
| 3 | 19 |
| 4 | 36 |
| 5 | 58 |
| 6 | 122 |
| 7 | 224 |
| 8 | 502 |
| 9 | 1066 |
| 10 | 2528 |
| 11 | 5902 |
| 12 | 14717 |
| 13 | 36557 |
| 14 | 93987 |
| 15 | 242387 |
| 16 | 635990 |
| 17 | 1675743 |
| 18 | 4457771 |
| 19 | 11903835 |
| 20 | 31970464 |
| 21 | 86144382 |
| 22 | 233001926 |
| 23 | 631920076 |
| 24 | 1718567054 |
| 25 | 4684178054 |
| 26 | 12794677456 |
| 27 | 35012475762 |
| 28 | 95976563897 |
| 29 | 263496604025 |
| 30 | 724445459431 |