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 | 9 |
| 3 | 19 |
| 4 | 38 |
| 5 | 66 |
| 6 | 110 |
| 7 | 170 |
| 8 | 255 |
| 9 | 365 |
| 10 | 511 |
| 11 | 693 |
| 12 | 924 |
| 13 | 1204 |
| 14 | 1548 |
| 15 | 1956 |
| 16 | 2445 |
| 17 | 3015 |
| 18 | 3685 |
| 19 | 4455 |
| 20 | 5346 |
| 21 | 6358 |
| 22 | 7514 |
| 23 | 8814 |
| 24 | 10283 |
| 25 | 11921 |
| 26 | 13755 |
| 27 | 15785 |
| 28 | 18040 |
| 29 | 20520 |
| 30 | 23256 |
| 31 | 26248 |
| 32 | 29529 |
| 33 | 33099 |
| 34 | 36993 |
| 35 | 41211 |
| 36 | 45790 |
| 37 | 50730 |
| 38 | 56070 |
| 39 | 61810 |
| 40 | 67991 |