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 | 2 |
| 1 | 3 |
| 2 | 6 |
| 3 | 5 |
| 4 | 30 |
| 5 | 125 |
| 6 | 18 |
| 7 | 45 |
| 8 | 150 |
| 9 | 7 |
| 10 | 1050 |
| 11 | 343 |
| 12 | 1250 |
| 13 | 2625 |
| 14 | 7350 |
| 15 | 16807 |
| 16 | 1650 |
| 17 | 847 |
| 18 | 43218 |
| 19 | 3465 |
| 20 | 27731550 |
| 21 | 3195731 |
| 22 | 1183724850 |
| 23 | 435930295269007 |
| 24 | 17794411250 |
| 25 | 7105308412125 |
| 26 | 3782866198615350 |
| 27 | 2709490941157 |
| 28 | 6237907125450 |
| 29 | 161696170950365051 |
| 30 | 10 |
| 31 | 75 |
| 32 | 750 |
| 33 | 175 |
| 34 | 294 |
| 35 | 12005 |
| 36 | 126 |
| 37 | 2205 |
| 38 | 51450 |
| 39 | 11 |
| 40 | 565950 |
| 41 | 1331 |
| 42 | 21008750 |
| 43 | 9904125 |
| 44 | 6225450 |
| 45 | 161051 |
| 46 | 1002614947950 |
| 47 | 190333 |