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 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 5 |
| 5 | 11 |
| 6 | 22 |
| 7 | 36 |
| 8 | 69 |
| 9 | 121 |
| 10 | 221 |
| 11 | 386 |
| 12 | 686 |
| 13 | 1210 |
| 14 | 2122 |
| 15 | 3734 |
| 16 | 6517 |
| 17 | 11408 |
| 18 | 19903 |
| 19 | 34714 |
| 20 | 60485 |
| 21 | 105312 |
| 22 | 183272 |
| 23 | 318758 |
| 24 | 554262 |
| 25 | 963361 |
| 26 | 1674076 |
| 27 | 2908426 |
| 28 | 5052066 |
| 29 | 8774386 |
| 30 | 15237482 |
| 31 | 26458718 |
| 32 | 45939797 |
| 33 | 79759442 |
| 34 | 138468656 |
| 35 | 240382216 |
| 36 | 417289619 |
| 37 | 724369536 |
| 38 | 1257396992 |