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 | 0 |
| 2 | 4 |
| 3 | 6 |
| 4 | 14 |
| 5 | 26 |
| 6 | 48 |
| 7 | 86 |
| 8 | 148 |
| 9 | 232 |
| 10 | 400 |
| 11 | 622 |
| 12 | 982 |
| 13 | 1514 |
| 14 | 2440 |
| 15 | 3482 |
| 16 | 5680 |
| 17 | 8162 |
| 18 | 12932 |
| 19 | 18398 |
| 20 | 29146 |
| 21 | 40706 |
| 22 | 64856 |
| 23 | 90070 |
| 24 | 141880 |
| 25 | 196448 |
| 26 | 309712 |
| 27 | 425412 |
| 28 | 668978 |
| 29 | 917450 |
| 30 | 1437148 |
| 31 | 1966022 |
| 32 | 3074080 |
| 33 | 4192882 |
| 34 | 6545344 |
| 35 | 8912278 |
| 36 | 13877920 |
| 37 | 18874298 |
| 38 | 29341624 |
| 39 | 39842594 |
| 40 | 61835140 |
| 41 | 83886002 |
| 42 | 129977116 |
| 43 | 176160686 |
| 44 | 272563362 |