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 | 1 |
| 2 | 10 |
| 3 | 55 |
| 4 | 100 |
| 5 | 505 |
| 6 | 550 |
| 7 | 1000 |
| 8 | 5005 |
| 9 | 5050 |
| 10 | 5500 |
| 11 | 10000 |
| 12 | 50005 |
| 13 | 50050 |
| 14 | 50500 |
| 15 | 55000 |
| 16 | 100000 |
| 17 | 500005 |
| 18 | 500050 |
| 19 | 500500 |
| 20 | 505000 |
| 21 | 550000 |
| 22 | 1000000 |
| 23 | 5000005 |
| 24 | 5000050 |
| 25 | 5000500 |
| 26 | 5005000 |
| 27 | 5050000 |
| 28 | 5500000 |
| 29 | 10000000 |
| 30 | 50000005 |
| 31 | 50000050 |
| 32 | 50000500 |