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 | 63 |
| 2 | 249 |
| 3 | 559 |
| 4 | 993 |
| 5 | 1551 |
| 6 | 2233 |
| 7 | 3039 |
| 8 | 3969 |
| 9 | 5023 |
| 10 | 6201 |
| 11 | 7503 |
| 12 | 8929 |
| 13 | 10479 |
| 14 | 12153 |
| 15 | 13951 |
| 16 | 15873 |
| 17 | 17919 |
| 18 | 20089 |
| 19 | 22383 |
| 20 | 24801 |
| 21 | 27343 |
| 22 | 30009 |
| 23 | 32799 |
| 24 | 35713 |
| 25 | 38751 |
| 26 | 41913 |
| 27 | 45199 |
| 28 | 48609 |
| 29 | 52143 |
| 30 | 55801 |
| 31 | 59583 |
| 32 | 63489 |
| 33 | 67519 |
| 34 | 71673 |
| 35 | 75951 |
| 36 | 80353 |
| 37 | 84879 |
| 38 | 89529 |
| 39 | 94303 |
| 40 | 99201 |