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 | 1 |
| 2 | 15 |
| 3 | 31 |
| 4 | 60 |
| 5 | 91 |
| 6 | 135 |
| 7 | 181 |
| 8 | 240 |
| 9 | 301 |
| 10 | 375 |
| 11 | 451 |
| 12 | 540 |
| 13 | 631 |
| 14 | 735 |
| 15 | 841 |
| 16 | 960 |
| 17 | 1081 |
| 18 | 1215 |
| 19 | 1351 |
| 20 | 1500 |
| 21 | 1651 |
| 22 | 1815 |
| 23 | 1981 |
| 24 | 2160 |
| 25 | 2341 |
| 26 | 2535 |
| 27 | 2731 |
| 28 | 2940 |
| 29 | 3151 |
| 30 | 3375 |
| 31 | 3601 |
| 32 | 3840 |
| 33 | 4081 |
| 34 | 4335 |
| 35 | 4591 |
| 36 | 4860 |
| 37 | 5131 |
| 38 | 5415 |
| 39 | 5701 |
| 40 | 6000 |
| 41 | 6301 |
| 42 | 6615 |
| 43 | 6931 |
| 44 | 7260 |
| 45 | 7591 |