n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 0 |
3 | 3 |
4 | 4 |
5 | 5 |
6 | 66 |
7 | 112 |
8 | 456 |
9 | 765 |
10 | 15070 |
11 | 31856 |
12 | 150756 |
13 | 663962 |
14 | 1943046 |
15 | 44316105 |
16 | 127348864 |
17 | 661449549 |
18 | 3220447446 |
19 | 20913769072 |
20 | 68889553260 |
21 | 2403704171190 |
22 | 7894983374674 |
23 | 51012052828947 |
24 | 270186003789312 |
25 | 1836634462055350 |
26 | 13402212376611266 |
[0,1,0,3,4,5,66,112,456,765,15070,31856,150756, 663962,1943046,44316105,127348864,661449549, 3220447446,20913769072,68889553260,2403704171190, 7894983374674,51012052828947,270186003789312, 1836634462055350,13402212376611266] |