n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 30 |
3 | 138 |
4 | 606 |
5 | 2610 |
6 | 11070 |
7 | 46386 |
8 | 192606 |
9 | 793938 |
10 | 3253038 |
11 | 13261746 |
12 | 53832462 |
13 | 217707762 |
14 | 877594086 |
15 | 3527521794 |
16 | 14142930774 |
17 | 56574143754 |
18 | 225841103190 |
19 | 899866007610 |
20 | 3579435531846 |
21 | 14215941861138 |
22 | 56378805654510 |
23 | 223297285830858 |
24 | 883326046736814 |
[1,6,30,138,606,2610,11070,46386,192606,793938, 3253038,13261746,53832462,217707762,877594086, 3527521794,14142930774,56574143754,225841103190, 899866007610,3579435531846,14215941861138, 56378805654510,223297285830858,883326046736814] |