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 | 23 |
| 2 | 223 |
| 3 | 230 |
| 4 | 232 |
| 5 | 233 |
| 6 | 235 |
| 7 | 237 |
| 8 | 323 |
| 9 | 523 |
| 10 | 723 |
| 11 | 1123 |
| 12 | 1323 |
| 13 | 1723 |
| 14 | 1923 |
| 15 | 2023 |
| 16 | 2223 |
| 17 | 2230 |
| 18 | 2232 |
| 19 | 2233 |
| 20 | 2235 |
| 21 | 2237 |
| 22 | 2300 |
| 23 | 2302 |
| 24 | 2303 |
| 25 | 2305 |
| 26 | 2307 |
| 27 | 2311 |
| 28 | 2313 |
| 29 | 2317 |
| 30 | 2319 |
| 31 | 2320 |
| 32 | 2322 |
| 33 | 2323 |
| 34 | 2325 |
| 35 | 2327 |
| 36 | 2330 |
| 37 | 2332 |
| 38 | 2333 |
| 39 | 2335 |
| 40 | 2337 |
| 41 | 2350 |
| 42 | 2352 |
| 43 | 2353 |
| 44 | 2355 |
| 45 | 2357 |
| 46 | 2370 |
| 47 | 2372 |
| 48 | 2373 |
| 49 | 2375 |
| 50 | 2377 |