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 | 101 |
| 2 | 322 |
| 3 | 808 |
| 4 | 1872 |
| 5 | 4192 |
| 6 | 9232 |
| 7 | 20144 |
| 8 | 43696 |
| 9 | 94384 |
| 10 | 203184 |
| 11 | 436144 |
| 12 | 933808 |
| 13 | 1994672 |
| 14 | 4251568 |
| 15 | 9043888 |
| 16 | 19201968 |
| 17 | 40697776 |
| 18 | 86114224 |
| 19 | 181927856 |
| 20 | 383778736 |
| 21 | 808452016 |
| 22 | 1700790192 |
| 23 | 3573546928 |
| 24 | 7499415472 |
| 25 | 15720251312 |