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) |
|---|---|
| 3 | 1 |
| 4 | 3 |
| 5 | 9 |
| 6 | 15 |
| 7 | 30 |
| 8 | 45 |
| 9 | 67 |
| 10 | 99 |
| 11 | 135 |
| 12 | 175 |
| 13 | 231 |
| 14 | 306 |
| 15 | 354 |
| 16 | 465 |
| 17 | 540 |
| 18 | 681 |
| 19 | 765 |
| 20 | 945 |
| 21 | 1040 |
| 22 | 1305 |
| 23 | 1386 |
| 24 | 1695 |
| 25 | 1779 |
| 26 | 2205 |
| 27 | 2290 |
| 28 | 2754 |
| 29 | 2835 |
| 30 | 3438 |
| 31 | 3480 |
| 32 | 4185 |
| 33 | 4272 |
| 34 | 5076 |
| 35 | 5004 |
| 36 | 6100 |
| 37 | 5985 |
| 38 | 7155 |
| 39 | 7154 |
| 40 | 8325 |
| 41 | 8190 |
| 42 | 9840 |
| 43 | 9471 |
| 44 | 11241 |
| 45 | 11055 |
| 46 | 12870 |
| 47 | 12420 |
| 48 | 14911 |