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 | 1 |
| 2 | 4 |
| 3 | 5 |
| 4 | 9 |
| 5 | 50 |
| 6 | 59 |
| 7 | 109 |
| 8 | 168 |
| 9 | 613 |
| 10 | 7524 |
| 11 | 30709 |
| 12 | 38233 |
| 13 | 10391852 |
| 14 | 10430085 |
| 15 | 20821937 |
| 16 | 52073959 |
| 17 | 385339650 |
| 18 | 437413609 |
| 19 | 15694815965 |
| 20 | 94606309399 |
| 21 | 110301125364 |
| 22 | 1087316437675 |
| 23 | 4459566876064 |
| 24 | 10006450189803 |
| 25 | 14466017065867 |
| 26 | 24472467255670 |
| 27 | 63410951577207 |
| 28 | 87883418832877 |