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 | 71 |
| 2 | 142 |
| 3 | 284 |
| 4 | 355 |
| 5 | 497 |
| 6 | 710 |
| 7 | 994 |
| 8 | 1420 |
| 9 | 1491 |
| 10 | 1988 |
| 11 | 2485 |
| 12 | 2840 |
| 13 | 2982 |
| 14 | 3976 |
| 15 | 4970 |
| 16 | 5680 |
| 17 | 5964 |
| 18 | 7455 |
| 19 | 9940 |
| 20 | 11928 |
| 21 | 14910 |
| 22 | 19880 |
| 23 | 23856 |
| 24 | 29820 |
| 25 | 39760 |
| 26 | 59640 |
| 27 | 79520 |
| 28 | 119280 |
| 29 | 238560 |
| 30 | 477120 |