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 | 9 |
| 3 | 19 |
| 4 | 57 |
| 5 | 51 |
| 6 | 171 |
| 7 | 99 |
| 8 | 313 |
| 9 | 262 |
| 10 | 459 |
| 11 | 243 |
| 12 | 1083 |
| 13 | 339 |
| 14 | 891 |
| 15 | 969 |
| 16 | 1593 |
| 17 | 579 |
| 18 | 2358 |
| 19 | 723 |
| 20 | 2907 |
| 21 | 1881 |
| 22 | 2187 |
| 23 | 1059 |
| 24 | 5947 |
| 25 | 1926 |
| 26 | 3051 |
| 27 | 3178 |
| 28 | 5643 |
| 29 | 1683 |
| 30 | 8721 |
| 31 | 1923 |
| 32 | 7737 |
| 33 | 4617 |
| 34 | 5211 |
| 35 | 5049 |
| 36 | 14934 |
| 37 | 2739 |
| 38 | 6507 |
| 39 | 6441 |
| 40 | 15963 |
| 41 | 3363 |
| 42 | 16929 |
| 43 | 3699 |
| 44 | 13851 |
| 45 | 13362 |
| 46 | 9531 |
| 47 | 4419 |
| 48 | 30267 |
| 49 | 7302 |
| 50 | 17334 |