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 | 0 |
| 1 | 4 |
| 2 | 19 |
| 3 | 56 |
| 4 | 130 |
| 5 | 260 |
| 6 | 469 |
| 7 | 784 |
| 8 | 1236 |
| 9 | 1860 |
| 10 | 2695 |
| 11 | 3784 |
| 12 | 5174 |
| 13 | 6916 |
| 14 | 9065 |
| 15 | 11680 |
| 16 | 14824 |
| 17 | 18564 |
| 18 | 22971 |
| 19 | 28120 |
| 20 | 34090 |
| 21 | 40964 |
| 22 | 48829 |
| 23 | 57776 |
| 24 | 67900 |
| 25 | 79300 |
| 26 | 92079 |
| 27 | 106344 |
| 28 | 122206 |
| 29 | 139780 |
| 30 | 159185 |
| 31 | 180544 |
| 32 | 203984 |
| 33 | 229636 |
| 34 | 257635 |
| 35 | 288120 |
| 36 | 321234 |
| 37 | 357124 |
| 38 | 395941 |
| 39 | 437840 |