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 | 0 |
| 2 | 4 |
| 3 | 24 |
| 4 | 154 |
| 5 | 212 |
| 6 | 787 |
| 7 | 1705 |
| 8 | 4214 |
| 9 | 5721 |
| 10 | 12546 |
| 11 | 19040 |
| 12 | 34639 |
| 13 | 43707 |
| 14 | 71879 |
| 15 | 92223 |
| 16 | 135728 |
| 17 | 155461 |
| 18 | 207991 |
| 19 | 239885 |
| 20 | 290527 |
| 21 | 308077 |
| 22 | 342616 |
| 23 | 361131 |
| 24 | 369562 |
| 25 | 359649 |
| 26 | 340025 |
| 27 | 329342 |
| 28 | 285616 |
| 29 | 255417 |
| 30 | 202540 |
| 31 | 180681 |
| 32 | 131074 |
| 33 | 105061 |
| 34 | 68902 |
| 35 | 56183 |
| 36 | 32950 |
| 37 | 23410 |
| 38 | 11766 |
| 39 | 9033 |
| 40 | 3957 |
| 41 | 2082 |
| 42 | 718 |
| 43 | 468 |
| 44 | 128 |
| 45 | 37 |
| 46 | 0 |
| 47 | 4 |