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) |
|---|---|
| 57 | 1 |
| 58 | 58 |
| 59 | 1711 |
| 60 | 34220 |
| 61 | 521855 |
| 62 | 6471002 |
| 63 | 67945521 |
| 64 | 621216192 |
| 65 | 5047381560 |
| 66 | 37014131440 |
| 67 | 247994680648 |
| 68 | 1533058025824 |
| 69 | 8815083648488 |
| 70 | 47465835030320 |
| 71 | 240719591939480 |
| 72 | 1155454041309504 |
| 73 | 5271759063474612 |
| 74 | 22947657099830664 |