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 | 3 |
| 2 | 12 |
| 3 | 40 |
| 4 | 98 |
| 5 | 253 |
| 6 | 455 |
| 7 | 850 |
| 8 | 1292 |
| 9 | 2047 |
| 10 | 3335 |
| 11 | 4495 |
| 12 | 6623 |
| 13 | 8938 |
| 14 | 11180 |
| 15 | 14335 |
| 16 | 18815 |
| 17 | 24249 |
| 18 | 28731 |
| 19 | 35845 |
| 20 | 42884 |
| 21 | 49348 |
| 22 | 59408 |
| 23 | 69139 |
| 24 | 81791 |
| 25 | 98164 |
| 26 | 112211 |
| 27 | 124939 |
| 28 | 141026 |
| 29 | 155434 |
| 30 | 173681 |
| 31 | 210439 |
| 32 | 233966 |
| 33 | 263040 |
| 34 | 286062 |
| 35 | 328098 |
| 36 | 355152 |
| 37 | 393442 |
| 38 | 434558 |
| 39 | 472777 |