n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 15 |
3 | 128 |
4 | 945 |
5 | 6655 |
6 | 46080 |
7 | 317057 |
8 | 2176335 |
9 | 14925184 |
10 | 102320625 |
11 | 701373311 |
12 | 4807434240 |
13 | 32951037313 |
14 | 225850798095 |
15 | 1548007091840 |
16 | 10610205501105 |
17 | 72723448842367 |
18 | 498453982018560 |
19 | 3416454544730369 |
20 | 23416728143799375 |
[0,1,15,128,945,6655,46080,317057,2176335, 14925184,102320625,701373311,4807434240, 32951037313,225850798095,1548007091840, 10610205501105,72723448842367,498453982018560, 3416454544730369,23416728143799375] |