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 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 12 |
| 6 | 26 |
| 7 | 51 |
| 8 | 92 |
| 9 | 176 |
| 10 | 365 |
| 11 | 709 |
| 12 | 1300 |
| 13 | 2587 |
| 14 | 5270 |
| 15 | 10220 |
| 16 | 18955 |
| 17 | 38403 |
| 18 | 77533 |
| 19 | 150438 |
| 20 | 281403 |
| 21 | 575333 |
| 22 | 1155661 |
| 23 | 2245004 |
| 24 | 4227273 |
| 25 | 8684673 |
| 26 | 17390359 |
| 27 | 33828704 |
| 28 | 64250459 |
| 29 | 131901368 |
| 30 | 263589730 |
| 31 | 513445147 |
| 32 | 984880747 |
| 33 | 2013363836 |
| 34 | 4018052441 |
| 35 | 7836832057 |
| 36 | 15144704167 |
| 37 | 30860244790 |
| 38 | 61530661493 |