n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 45 |
4 | 395 |
5 | 3775 |
6 | 38146 |
7 | 400826 |
8 | 4335455 |
9 | 47951065 |
10 | 539823620 |
11 | 6165377836 |
12 | 71261299056 |
13 | 831990025420 |
14 | 9797505040130 |
15 | 116235417614900 |
16 | 1387958781395535 |
17 | 16668362761081560 |
18 | 201190667288072005 |
19 | 2439418470063468505 |
20 | 29698136499328762445 |
[1,1,6,45,395,3775,38146,400826,4335455,47951065, 539823620,6165377836,71261299056,831990025420, 9797505040130,116235417614900,1387958781395535, 16668362761081560,201190667288072005, 2439418470063468505,29698136499328762445] |