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 | 2 |
| 2 | 29 |
| 3 | 60 |
| 4 | 869 |
| 5 | 1798 |
| 6 | 26041 |
| 7 | 53880 |
| 8 | 780361 |
| 9 | 1614602 |
| 10 | 23384789 |
| 11 | 48384180 |
| 12 | 700763309 |
| 13 | 1449910798 |
| 14 | 20999514481 |
| 15 | 43448939760 |
| 16 | 629284671121 |
| 17 | 1302018282002 |
| 18 | 18857540619149 |
| 19 | 39017099520300 |
| 20 | 565096933903349 |
| 21 | 1169210967326998 |
| 22 | 16934050476481321 |
| 23 | 35037311920289640 |