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 | 6 |
| 5 | 19 |
| 6 | 47 |
| 7 | 101 |
| 8 | 199 |
| 9 | 370 |
| 10 | 661 |
| 11 | 1148 |
| 12 | 1954 |
| 13 | 3278 |
| 14 | 5442 |
| 15 | 8967 |
| 16 | 14696 |
| 17 | 23993 |
| 18 | 39065 |
| 19 | 63483 |
| 20 | 103025 |
| 21 | 167040 |
| 22 | 270655 |
| 23 | 438346 |
| 24 | 709716 |
| 25 | 1148844 |
| 26 | 1859412 |
| 27 | 3009181 |
| 28 | 4869594 |
| 29 | 7879855 |
| 30 | 12750611 |
| 31 | 20631713 |
| 32 | 33383659 |
| 33 | 54016798 |
| 34 | 87401977 |
| 35 | 141420392 |
| 36 | 228824086 |
| 37 | 370246298 |
| 38 | 599072310 |
| 39 | 969320643 |