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) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 6 |
| 10 | 11 |
| 11 | 18 |
| 12 | 37 |
| 13 | 66 |
| 14 | 135 |
| 15 | 265 |
| 16 | 552 |
| 17 | 1132 |
| 18 | 2410 |
| 19 | 5098 |
| 20 | 11020 |
| 21 | 23846 |
| 22 | 52233 |
| 23 | 114796 |
| 24 | 254371 |
| 25 | 565734 |
| 26 | 1265579 |
| 27 | 2841632 |
| 28 | 6408674 |
| 29 | 14502229 |
| 30 | 32935002 |
| 31 | 75021750 |
| 32 | 171404424 |
| 33 | 392658842 |
| 34 | 901842517 |
| 35 | 2076217086 |
| 36 | 4790669518 |
| 37 | 11077270335 |