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 | 5 |
| 4 | 10 |
| 5 | 23 |
| 6 | 47 |
| 7 | 102 |
| 8 | 207 |
| 9 | 440 |
| 10 | 890 |
| 11 | 1847 |
| 12 | 3730 |
| 13 | 7648 |
| 14 | 15400 |
| 15 | 31332 |
| 16 | 62922 |
| 17 | 127234 |
| 18 | 255374 |
| 19 | 514269 |
| 20 | 1030809 |
| 21 | 2071344 |
| 22 | 4148707 |
| 23 | 8321937 |
| 24 | 16660755 |
| 25 | 33384685 |
| 26 | 66812942 |
| 27 | 133789638 |
| 28 | 267685113 |
| 29 | 535784667 |
| 30 | 1071878216 |
| 31 | 2144762139 |
| 32 | 4290261840 |
| 33 | 8583175092 |
| 34 | 17168208940 |
| 35 | 34342860713 |