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 | 81 |
| 3 | 811 |
| 4 | 4353 |
| 5 | 16251 |
| 6 | 47953 |
| 7 | 120051 |
| 8 | 266241 |
| 9 | 538003 |
| 10 | 1010001 |
| 11 | 1786203 |
| 12 | 3006721 |
| 13 | 4855371 |
| 14 | 7567953 |
| 15 | 11441251 |
| 16 | 16842753 |
| 17 | 24221091 |
| 18 | 34117201 |
| 19 | 47176203 |
| 20 | 64160001 |
| 21 | 85960603 |
| 22 | 113614161 |
| 23 | 148315731 |
| 24 | 191434753 |
| 25 | 244531251 |
| 26 | 309372753 |
| 27 | 387951931 |