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 | 0 |
| 2 | 4 |
| 3 | 15 |
| 4 | 20 |
| 5 | 50 |
| 6 | 60 |
| 7 | 119 |
| 8 | 136 |
| 9 | 153 |
| 10 | 170 |
| 11 | 308 |
| 12 | 336 |
| 13 | 533 |
| 14 | 574 |
| 15 | 615 |
| 16 | 656 |
| 17 | 986 |
| 18 | 1044 |
| 19 | 1463 |
| 20 | 1540 |
| 21 | 1617 |
| 22 | 1694 |
| 23 | 2300 |
| 24 | 2400 |
| 25 | 2500 |
| 26 | 2600 |
| 27 | 2700 |
| 28 | 2800 |
| 29 | 3741 |
| 30 | 3870 |
| 31 | 4960 |
| 32 | 5120 |
| 33 | 5280 |
| 34 | 5440 |
| 35 | 5600 |
| 36 | 5760 |
| 37 | 7289 |
| 38 | 7486 |
| 39 | 7683 |
| 40 | 7880 |
| 41 | 9758 |
| 42 | 9996 |
| 43 | 12083 |
| 44 | 12364 |
| 45 | 12645 |
| 46 | 12926 |
| 47 | 15416 |
| 48 | 15744 |