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 | 3 |
| 2 | 6 |
| 3 | 13 |
| 4 | 21 |
| 5 | 36 |
| 6 | 58 |
| 7 | 93 |
| 8 | 141 |
| 9 | 203 |
| 10 | 306 |
| 11 | 420 |
| 12 | 616 |
| 13 | 828 |
| 14 | 1188 |
| 15 | 1569 |
| 16 | 2181 |
| 17 | 2877 |
| 18 | 3878 |
| 19 | 5085 |
| 20 | 6651 |
| 21 | 8844 |
| 22 | 11148 |
| 23 | 14928 |
| 24 | 18196 |
| 25 | 24864 |
| 26 | 29118 |
| 27 | 40540 |
| 28 | 45858 |
| 29 | 65280 |
| 30 | 70884 |
| 31 | 103425 |
| 32 | 108357 |
| 33 | 161853 |
| 34 | 162852 |
| 35 | 250395 |
| 36 | 242963 |
| 37 | 382644 |
| 38 | 356970 |
| 39 | 579637 |