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 | 610 |
| 2 | 987 |
| 3 | 2584 |
| 4 | 10946 |
| 5 | 3524578 |
| 6 | 9227465 |
| 7 | 24157817 |
| 8 | 39088169 |
| 9 | 63245986 |
| 10 | 1836311903 |
| 11 | 7778742049 |
| 12 | 20365011074 |
| 13 | 591286729879 |
| 14 | 4052739537881 |
| 15 | 17167680177565 |
| 16 | 44945570212853 |
| 17 | 61305790721611591 |
| 18 | 420196140727489673 |
| 19 | 1500520536206896083277 |
| 20 | 6356306993006846248183 |