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) |
|---|---|
| 0 | 0 |
| 1 | 15 |
| 2 | 30 |
| 3 | 31 |
| 4 | 60 |
| 5 | 62 |
| 6 | 63 |
| 7 | 120 |
| 8 | 124 |
| 9 | 126 |
| 10 | 127 |
| 11 | 240 |
| 12 | 248 |
| 13 | 252 |
| 14 | 254 |
| 15 | 255 |
| 16 | 480 |
| 17 | 496 |
| 18 | 504 |
| 19 | 508 |
| 20 | 510 |
| 21 | 511 |
| 22 | 960 |
| 23 | 992 |
| 24 | 1008 |
| 25 | 1016 |
| 26 | 1020 |
| 27 | 1022 |
| 28 | 1023 |
| 29 | 1920 |
| 30 | 1984 |
| 31 | 2016 |
| 32 | 2032 |
| 33 | 2040 |
| 34 | 2044 |
| 35 | 2046 |
| 36 | 2047 |
| 37 | 3840 |
| 38 | 3855 |
| 39 | 3968 |
| 40 | 4032 |
| 41 | 4064 |
| 42 | 4080 |
| 43 | 4088 |
| 44 | 4092 |
| 45 | 4094 |