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 | 109 |
| 3 | 751 |
| 4 | 15973 |
| 5 | 41161 |
| 6 | 54001 |
| 7 | 345601 |
| 8 | 1543501 |
| 9 | 1726273 |
| 10 | 2372761 |
| 11 | 3833281 |
| 12 | 8039359 |
| 13 | 10010113 |
| 14 | 18125251 |
| 15 | 25769593 |
| 16 | 63447211 |
| 17 | 75609559 |
| 18 | 93178009 |
| 19 | 147741001 |
| 20 | 164490259 |
| 21 | 170377561 |
| 22 | 270532609 |
| 23 | 432967681 |
| 24 | 457483993 |
| 25 | 509625001 |
| 26 | 551562859 |
| 27 | 596037313 |
| 28 | 1055592001 |