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 | 0 |
| 1 | 3 |
| 2 | 4 |
| 3 | 11 |
| 4 | 17 |
| 5 | 36 |
| 6 | 69 |
| 7 | 133 |
| 8 | 254 |
| 9 | 499 |
| 10 | 959 |
| 11 | 1852 |
| 12 | 3589 |
| 13 | 6943 |
| 14 | 13410 |
| 15 | 25951 |
| 16 | 50197 |
| 17 | 97050 |
| 18 | 187699 |
| 19 | 363047 |
| 20 | 702066 |
| 21 | 1357755 |
| 22 | 2625947 |
| 23 | 5078438 |
| 24 | 9821417 |
| 25 | 18994465 |
| 26 | 36734648 |
| 27 | 71043261 |
| 28 | 137395463 |
| 29 | 265718350 |
| 30 | 513889567 |
| 31 | 993844901 |
| 32 | 1922062694 |
| 33 | 3717202293 |
| 34 | 7188941039 |