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 | 4 |
| 2 | 10 |
| 3 | 22 |
| 4 | 40 |
| 5 | 70 |
| 6 | 112 |
| 7 | 172 |
| 8 | 250 |
| 9 | 358 |
| 10 | 502 |
| 11 | 706 |
| 12 | 970 |
| 13 | 1312 |
| 14 | 1768 |
| 15 | 2386 |
| 16 | 3184 |
| 17 | 4228 |
| 18 | 5620 |
| 19 | 7450 |
| 20 | 9838 |
| 21 | 13018 |
| 22 | 17164 |
| 23 | 22582 |
| 24 | 29614 |
| 25 | 38812 |
| 26 | 50704 |
| 27 | 66190 |
| 28 | 86410 |
| 29 | 112834 |
| 30 | 147256 |
| 31 | 192118 |
| 32 | 250564 |
| 33 | 326686 |
| 34 | 425962 |
| 35 | 555478 |
| 36 | 724024 |
| 37 | 943540 |
| 38 | 1229290 |