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 | 0 |
| 1 | 1 |
| 2 | 70 |
| 3 | 1107 |
| 4 | 8092 |
| 5 | 38165 |
| 6 | 135954 |
| 7 | 398567 |
| 8 | 1012664 |
| 9 | 2306025 |
| 10 | 4816030 |
| 11 | 9377467 |
| 12 | 17232084 |
| 13 | 30162301 |
| 14 | 50651498 |
| 15 | 82073295 |
| 16 | 128912240 |
| 17 | 197018321 |
| 18 | 293897718 |
| 19 | 429042211 |
| 20 | 614299660 |
| 21 | 864287973 |
| 22 | 1196854978 |
| 23 | 1633586615 |
| 24 | 2200365864 |
| 25 | 2927984825 |
| 26 | 3852812366 |
| 27 | 5017519755 |
| 28 | 6471866692 |
| 29 | 8273550157 |
| 30 | 10489118490 |