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 | 1 |
| 3 | 2 |
| 4 | 7 |
| 5 | 8 |
| 6 | 14 |
| 7 | 32 |
| 8 | 121 |
| 9 | 126 |
| 10 | 248 |
| 11 | 512 |
| 12 | 1003 |
| 13 | 2048 |
| 14 | 4064 |
| 15 | 8176 |
| 16 | 130539 |
| 17 | 32768 |
| 18 | 65382 |
| 19 | 131072 |
| 20 | 261868 |
| 21 | 524224 |
| 22 | 1048064 |
| 23 | 2097152 |
| 24 | 4193131 |
| 25 | 8388576 |
| 26 | 16775168 |
| 27 | 33554180 |
| 28 | 67104688 |
| 29 | 134217728 |
| 30 | 268426672 |
| 31 | 536870912 |
| 32 | 8589802359 |
| 33 | 2147482624 |
| 34 | 4294934528 |
| 35 | 8589934336 |
| 36 | 17179801257 |
| 37 | 34359738368 |
| 38 | 68719345664 |
| 39 | 137438949376 |
| 40 | 274877643724 |
| 41 | 549755813888 |