n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 490 |
4 | 4998 |
5 | 45864 |
6 | 464422 |
7 | 3429426 |
8 | 21668094 |
9 | 111678742 |
10 | 492567012 |
11 | 1876801038 |
12 | 6352945942 |
13 | 19484903508 |
14 | 54935857326 |
15 | 144330551050 |
[1,0,0,490,4998,45864,464422,3429426,21668094, 111678742,492567012,1876801038,6352945942, 19484903508,54935857326,144330551050] |