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 | 5 |
| 3 | 13 |
| 4 | 33 |
| 5 | 61 |
| 6 | 143 |
| 7 | 246 |
| 8 | 521 |
| 9 | 985 |
| 10 | 1995 |
| 11 | 3499 |
| 12 | 7923 |
| 13 | 14028 |
| 14 | 28642 |
| 15 | 55603 |
| 16 | 115369 |
| 17 | 210665 |
| 18 | 455399 |
| 19 | 838338 |
| 20 | 1755983 |
| 21 | 3383652 |
| 22 | 6974159 |
| 23 | 13034492 |
| 24 | 28011611 |
| 25 | 52475486 |
| 26 | 108821068 |
| 27 | 210050941 |
| 28 | 436273458 |
| 29 | 824191369 |
| 30 | 1744975533 |
| 31 | 3301974301 |
| 32 | 6867107913 |
| 33 | 13250454241 |