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 | 4 |
| 3 | 8 |
| 4 | 19 |
| 5 | 32 |
| 6 | 74 |
| 7 | 128 |
| 8 | 274 |
| 9 | 519 |
| 10 | 1058 |
| 11 | 2048 |
| 12 | 4184 |
| 13 | 8192 |
| 14 | 16514 |
| 15 | 32806 |
| 16 | 65809 |
| 17 | 131072 |
| 18 | 262728 |
| 19 | 524288 |
| 20 | 1049648 |
| 21 | 2097286 |
| 22 | 4196354 |
| 23 | 8388608 |
| 24 | 16781654 |
| 25 | 33554463 |
| 26 | 67117058 |
| 27 | 134218246 |
| 28 | 268451984 |
| 29 | 536870912 |
| 30 | 1073775718 |
| 31 | 2147483648 |
| 32 | 4295033104 |
| 33 | 8589936646 |