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 | 11242770 |
| 2 | 18673200 |
| 3 | 77805000 |
| 4 | 117138840 |
| 5 | 122649450 |
| 6 | 278023200 |
| 7 | 393513120 |
| 8 | 881879460 |
| 9 | 2177410830 |
| 10 | 2364390210 |
| 11 | 3440848320 |
| 12 | 3919303080 |
| 13 | 5151045900 |
| 14 | 5836032510 |
| 15 | 7284273360 |
| 16 | 8029787220 |
| 17 | 8505803460 |
| 18 | 12998545560 |
| 19 | 13081794180 |
| 20 | 13759304790 |
| 21 | 14031484740 |
| 22 | 14104654410 |