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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 7 |
| 6 | 13 |
| 7 | 24 |
| 8 | 55 |
| 9 | 133 |
| 10 | 301 |
| 11 | 678 |
| 12 | 1639 |
| 13 | 4120 |
| 14 | 10253 |
| 15 | 25591 |
| 16 | 65869 |
| 17 | 173551 |
| 18 | 459493 |
| 19 | 1225379 |
| 20 | 3325123 |
| 21 | 9162046 |
| 22 | 25451181 |
| 23 | 71296499 |
| 24 | 202144225 |
| 25 | 579612934 |
| 26 | 1675822453 |
| 27 | 4885178596 |
| 28 | 14376297345 |
| 29 | 42690792651 |
| 30 | 127757371105 |
| 31 | 385241085261 |
| 32 | 1170960103855 |