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 | 2 |
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 9 |
| 5 | 15 |
| 6 | 27 |
| 7 | 36 |
| 8 | 51 |
| 9 | 87 |
| 10 | 135 |
| 11 | 243 |
| 12 | 315 |
| 13 | 531 |
| 14 | 735 |
| 15 | 969 |
| 16 | 1707 |
| 17 | 2679 |
| 18 | 3831 |
| 19 | 6363 |
| 20 | 9663 |
| 21 | 14559 |
| 22 | 23091 |
| 23 | 33045 |
| 24 | 45999 |
| 25 | 77523 |
| 26 | 120471 |
| 27 | 177639 |
| 28 | 252717 |
| 29 | 405321 |
| 30 | 554037 |
| 31 | 795831 |
| 32 | 1335087 |
| 33 | 1819527 |
| 34 | 2491233 |
| 35 | 4183467 |
| 36 | 5920215 |
| 37 | 8051991 |
| 38 | 12530967 |