n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 45 |
4 | 382 |
5 | 3498 |
6 | 33696 |
7 | 336549 |
8 | 3453750 |
9 | 36197694 |
10 | 385817700 |
11 | 4169274354 |
12 | 45573898860 |
13 | 503014992340 |
14 | 5598239469972 |
15 | 62754598454805 |
16 | 707899472049702 |
17 | 8029846915852662 |
18 | 91534356644739300 |
19 | 1048036064453687814 |
20 | 12047350849047152388 |
21 | 138984261578842304268 |
[1,1,6,45,382,3498,33696,336549,3453750,36197694, 385817700,4169274354,45573898860,503014992340, 5598239469972,62754598454805,707899472049702, 8029846915852662,91534356644739300, 1048036064453687814,12047350849047152388, 138984261578842304268] |