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 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 19 |
| 5 | 51 |
| 6 | 121 |
| 7 | 253 |
| 8 | 477 |
| 9 | 829 |
| 10 | 1351 |
| 11 | 2091 |
| 12 | 3103 |
| 13 | 4447 |
| 14 | 6189 |
| 15 | 8401 |
| 16 | 11161 |
| 17 | 14553 |
| 18 | 18667 |
| 19 | 23599 |
| 20 | 29451 |
| 21 | 36331 |
| 22 | 44353 |
| 23 | 53637 |
| 24 | 64309 |
| 25 | 76501 |
| 26 | 90351 |
| 27 | 106003 |
| 28 | 123607 |
| 29 | 143319 |
| 30 | 165301 |
| 31 | 189721 |
| 32 | 216753 |
| 33 | 246577 |
| 34 | 279379 |
| 35 | 315351 |
| 36 | 354691 |
| 37 | 397603 |
| 38 | 444297 |
| 39 | 494989 |
| 40 | 549901 |