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) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 16 |
| 4 | 45 |
| 5 | 116 |
| 6 | 254 |
| 7 | 516 |
| 8 | 956 |
| 9 | 1669 |
| 10 | 2760 |
| 11 | 4379 |
| 12 | 6676 |
| 13 | 9888 |
| 14 | 14219 |
| 15 | 19956 |
| 16 | 27421 |
| 17 | 37062 |
| 18 | 49143 |
| 19 | 64272 |
| 20 | 82888 |
| 21 | 105629 |
| 22 | 133132 |
| 23 | 166090 |
| 24 | 205223 |
| 25 | 251624 |
| 26 | 305861 |
| 27 | 369247 |
| 28 | 442695 |
| 29 | 527417 |
| 30 | 624483 |
| 31 | 735777 |
| 32 | 861885 |
| 33 | 1005214 |
| 34 | 1166797 |
| 35 | 1348609 |