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 | 3 |
| 2 | 45 |
| 3 | 231 |
| 4 | 865 |
| 5 | 2081 |
| 6 | 4489 |
| 7 | 8211 |
| 8 | 14401 |
| 9 | 22857 |
| 10 | 35445 |
| 11 | 51741 |
| 12 | 74397 |
| 13 | 102271 |
| 14 | 138801 |
| 15 | 182739 |
| 16 | 238181 |
| 17 | 303175 |
| 18 | 383097 |
| 19 | 474995 |
| 20 | 586021 |
| 21 | 712003 |
| 22 | 860829 |
| 23 | 1028225 |
| 24 | 1223773 |
| 25 | 1440593 |
| 26 | 1689993 |
| 27 | 1965525 |
| 28 | 2279509 |
| 29 | 2622993 |
| 30 | 3011405 |
| 31 | 3433615 |
| 32 | 3907241 |
| 33 | 4419261 |
| 34 | 4988781 |
| 35 | 5603271 |