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) |
|---|---|
| 15 | 1 |
| 16 | 3 |
| 17 | 9 |
| 18 | 22 |
| 19 | 51 |
| 20 | 108 |
| 21 | 208 |
| 22 | 390 |
| 23 | 693 |
| 24 | 1193 |
| 25 | 1977 |
| 26 | 3195 |
| 27 | 4995 |
| 28 | 7722 |
| 29 | 11583 |
| 30 | 17164 |
| 31 | 24882 |
| 32 | 35685 |
| 33 | 50205 |
| 34 | 70083 |
| 35 | 96300 |
| 36 | 131101 |
| 37 | 176358 |
| 38 | 235377 |
| 39 | 310651 |
| 40 | 407352 |
| 41 | 529074 |
| 42 | 682750 |
| 43 | 874038 |
| 44 | 1112085 |
| 45 | 1405521 |
| 46 | 1766259 |
| 47 | 2206413 |
| 48 | 2741431 |
| 49 | 3389052 |
| 50 | 4168089 |
| 51 | 5103450 |
| 52 | 6218469 |