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 | 399 |
| 3 | 8099 |
| 4 | 33123 |
| 5 | 93635 |
| 6 | 159200 |
| 7 | 256035 |
| 8 | 492803 |
| 9 | 864899 |
| 10 | 1416099 |
| 11 | 2196323 |
| 12 | 3261635 |
| 13 | 4674243 |
| 14 | 6502499 |
| 15 | 8820899 |
| 16 | 12531599 |
| 17 | 16257023 |
| 18 | 20757135 |
| 19 | 26132543 |
| 20 | 32489999 |
| 21 | 39942399 |
| 22 | 48608783 |
| 23 | 58614335 |
| 24 | 65593800 |
| 25 | 73205135 |
| 26 | 86713343 |
| 27 | 102009999 |
| 28 | 119246399 |
| 29 | 138579983 |