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 | 1649373 |
| 2 | 4029519 |
| 3 | 15281054 |
| 4 | 31906263 |
| 5 | 43387386 |
| 6 | 58198173 |
| 7 | 94468958 |
| 8 | 100084949 |
| 9 | 131393766 |
| 10 | 131986502 |
| 11 | 140282279 |
| 12 | 156786124 |
| 13 | 211004079 |
| 14 | 246960048 |
| 15 | 253000850 |
| 16 | 278206663 |
| 17 | 310135917 |
| 18 | 330168203 |
| 19 | 351204398 |
| 20 | 363280904 |
| 21 | 412296883 |
| 22 | 504736647 |
| 23 | 515831624 |
| 24 | 537255647 |
| 25 | 566300238 |