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 | 6 |
| 3 | 21 |
| 4 | 61 |
| 5 | 158 |
| 6 | 386 |
| 7 | 902 |
| 8 | 2051 |
| 9 | 4565 |
| 10 | 10006 |
| 11 | 21668 |
| 12 | 46484 |
| 13 | 98958 |
| 14 | 209360 |
| 15 | 440627 |
| 16 | 923299 |
| 17 | 1927456 |
| 18 | 4010730 |
| 19 | 8322242 |
| 20 | 17226050 |
| 21 | 35578192 |
| 22 | 73339778 |
| 23 | 150918130 |
| 24 | 310073773 |
| 25 | 636173403 |
| 26 | 1303554560 |
| 27 | 2667935114 |
| 28 | 5454522188 |
| 29 | 11140674850 |
| 30 | 22733861902 |
| 31 | 46352349432 |
| 32 | 94435176992 |