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 | 14544 |
| 2 | 64920 |
| 3 | 258096 |
| 4 | 925720 |
| 5 | 3703264 |
| 6 | 16562224 |
| 7 | 66158664 |
| 8 | 237396008 |
| 9 | 948568384 |
| 10 | 4239130768 |
| 11 | 16949182920 |
| 12 | 60767078320 |
| 13 | 243080890624 |
| 14 | 1085016114240 |
| 15 | 4341071150792 |
| 16 | 15535530051144 |
| 17 | 62225888982288 |
| 18 | 277421534227968 |
| 19 | 1111070191401136 |
| 20 | 3979658311943880 |
| 21 | 15908408006551904 |
| 22 | 71162952082313488 |
| 23 | 284082756324759560 |
| 24 | 1019946695587234480 |