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 | 5 |
| 3 | 18 |
| 4 | 54 |
| 5 | 135 |
| 6 | 291 |
| 7 | 560 |
| 8 | 988 |
| 9 | 1629 |
| 10 | 2545 |
| 11 | 3806 |
| 12 | 5490 |
| 13 | 7683 |
| 14 | 10479 |
| 15 | 13980 |
| 16 | 18296 |
| 17 | 23545 |
| 18 | 29853 |
| 19 | 37354 |
| 20 | 46190 |
| 21 | 56511 |
| 22 | 68475 |
| 23 | 82248 |
| 24 | 98004 |
| 25 | 115925 |
| 26 | 136201 |
| 27 | 159030 |
| 28 | 184618 |
| 29 | 213179 |
| 30 | 244935 |
| 31 | 280116 |
| 32 | 318960 |
| 33 | 361713 |
| 34 | 408629 |
| 35 | 459970 |
| 36 | 516006 |
| 37 | 577015 |