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 | 21 |
| 2 | 69 |
| 3 | 81 |
| 4 | 84 |
| 5 | 261 |
| 6 | 273 |
| 7 | 276 |
| 8 | 321 |
| 9 | 324 |
| 10 | 336 |
| 11 | 1029 |
| 12 | 1041 |
| 13 | 1044 |
| 14 | 1089 |
| 15 | 1092 |
| 16 | 1104 |
| 17 | 1281 |
| 18 | 1284 |
| 19 | 1296 |
| 20 | 1344 |
| 21 | 4101 |
| 22 | 4113 |
| 23 | 4116 |
| 24 | 4161 |
| 25 | 4164 |
| 26 | 4176 |
| 27 | 4353 |
| 28 | 4356 |
| 29 | 4368 |
| 30 | 4416 |
| 31 | 5121 |
| 32 | 5124 |
| 33 | 5136 |
| 34 | 5184 |
| 35 | 5376 |
| 36 | 16389 |
| 37 | 16401 |
| 38 | 16404 |
| 39 | 16449 |
| 40 | 16452 |
| 41 | 16464 |
| 42 | 16641 |
| 43 | 16644 |
| 44 | 16656 |
| 45 | 16704 |