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 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 10 |
6 | 90 |
7 | 840 |
8 | 8435 |
9 | 91980 |
10 | 1089900 |
11 | 13998600 |
12 | 194184375 |
13 | 2897744850 |
14 | 46335539250 |
15 | 790936146000 |
16 | 14361717995625 |
17 | 276491756541000 |
18 | 5626652076045000 |
19 | 120696581303298000 |
20 | 2722068344529158625 |
21 | 64392333741216731250 |
22 | 1594243471325576321250 |