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 | 10 |
| 2 | 36 |
| 3 | 912 |
| 4 | 2112 |
| 5 | 58368 |
| 6 | 135168 |
| 7 | 3735552 |
| 8 | 260308992 |
| 9 | 541065216 |
| 10 | 66840428544 |
| 11 | 963146416128 |
| 12 | 2267742732288 |
| 13 | 62672162783232 |
| 14 | 4367260185526272 |
| 15 | 279293545641148416 |
| 16 | 580964351930793984 |
| 17 | 71769363661776224256 |
| 18 | 1034170589632341737472 |
| 19 | 2434970217729660813312 |