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 | 5 |
| 3 | 11 |
| 4 | 19 |
| 5 | 41 |
| 6 | 71 |
| 7 | 153 |
| 8 | 265 |
| 9 | 571 |
| 10 | 989 |
| 11 | 2131 |
| 12 | 3691 |
| 13 | 7953 |
| 14 | 13775 |
| 15 | 29681 |
| 16 | 51409 |
| 17 | 110771 |
| 18 | 191861 |
| 19 | 413403 |
| 20 | 716035 |
| 21 | 1542841 |
| 22 | 2672279 |
| 23 | 5757961 |
| 24 | 9973081 |
| 25 | 21489003 |
| 26 | 37220045 |
| 27 | 80198051 |
| 28 | 138907099 |
| 29 | 299303201 |
| 30 | 518408351 |
| 31 | 1117014753 |
| 32 | 1934726305 |
| 33 | 4168755811 |
| 34 | 7220496869 |
| 35 | 15558008491 |
| 36 | 26947261171 |