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 | 6 |
| 2 | 21 |
| 3 | 56 |
| 4 | 126 |
| 5 | 252 |
| 6 | 461 |
| 7 | 786 |
| 8 | 1266 |
| 9 | 1946 |
| 10 | 2877 |
| 11 | 4116 |
| 12 | 5726 |
| 13 | 7776 |
| 14 | 10341 |
| 15 | 13502 |
| 16 | 17346 |
| 17 | 21966 |
| 18 | 27461 |
| 19 | 33936 |
| 20 | 41502 |
| 21 | 50276 |
| 22 | 60381 |
| 23 | 71946 |
| 24 | 85106 |
| 25 | 100002 |
| 26 | 116781 |
| 27 | 135596 |
| 28 | 156606 |
| 29 | 179976 |
| 30 | 205877 |
| 31 | 234486 |
| 32 | 265986 |
| 33 | 300566 |
| 34 | 338421 |
| 35 | 379752 |
| 36 | 424766 |
| 37 | 473676 |
| 38 | 526701 |