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 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 1 |
10 | 5 |
11 | 15 |
12 | 35 |
13 | 70 |
14 | 127 |
15 | 225 |
16 | 455 |
17 | 1260 |
18 | 4555 |
19 | 17760 |
20 | 67265 |
21 | 241015 |
22 | 818705 |
23 | 2666400 |
24 | 8464210 |
25 | 26791045 |
26 | 87104270 |
27 | 300213875 |
28 | 1119214050 |
29 | 4500888827 |
30 | 19104042345 |
31 | 83376236115 |
32 | 366831787085 |
33 | 1609394914730 |
34 | 7015234913278 |
35 | 30426949154855 |
36 | 131992116224295 |
37 | 577090099245575 |
38 | 2565792536742865 |
39 | 11698401074992087 |
40 | 55012217948708040 |