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 | 1 |
2 | 6 |
3 | 40 |
4 | 294 |
5 | 2310 |
6 | 19008 |
7 | 161733 |
8 | 1411410 |
9 | 12563408 |
10 | 113624940 |
11 | 1041158846 |
12 | 9645100416 |
13 | 90182859700 |
14 | 849966450840 |
15 | 8066498833800 |
16 | 77019930780030 |
17 | 739349587508730 |
18 | 7131313919822400 |
19 | 69079082238199110 |
20 | 671733716498945100 |
21 | 6554862704411317920 |
22 | 64166669054324268120 |
23 | 629964451984076275950 |