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) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 253 |
| 3 | 1445 |
| 4 | 5741 |
| 5 | 17861 |
| 6 | 46705 |
| 7 | 107353 |
| 8 | 223465 |
| 9 | 430081 |
| 10 | 776821 |
| 11 | 1331485 |
| 12 | 2184053 |
| 13 | 3451085 |
| 14 | 5280521 |
| 15 | 7856881 |
| 16 | 11406865 |
| 17 | 16205353 |
| 18 | 22581805 |
| 19 | 30927061 |
| 20 | 41700541 |
| 21 | 55437845 |
| 22 | 72758753 |
| 23 | 94375625 |
| 24 | 121102201 |
| 25 | 153862801 |
| 26 | 193701925 |
| 27 | 241794253 |
| 28 | 299455045 |
| 29 | 368150941 |
| 30 | 449511161 |
| 31 | 545339105 |
| 32 | 657624353 |
| 33 | 788555065 |
| 34 | 940530781 |
| 35 | 1116175621 |
| 36 | 1318351885 |
| 37 | 1550174053 |
| 38 | 1815023185 |
| 39 | 2116561721 |