n | a(n) |
---|---|
1 | 0 |
2 | 3 |
3 | 14 |
4 | 45 |
5 | 146 |
6 | 537 |
7 | 1934 |
8 | 6861 |
9 | 24386 |
10 | 86913 |
11 | 309638 |
12 | 1102677 |
13 | 3927050 |
14 | 13986633 |
15 | 49814510 |
16 | 177416541 |
17 | 631877618 |
18 | 2250466449 |
19 | 8015156630 |
20 | 28546401765 |
21 | 101669514458 |
22 | 362101348953 |
23 | 1289643083966 |
24 | 4593131945709 |
25 | 16358681988674 |
[0,3,14,45,146,537,1934,6861,24386,86913,309638, 1102677,3927050,13986633,49814510,177416541, 631877618,2250466449,8015156630,28546401765, 101669514458,362101348953,1289643083966, 4593131945709,16358681988674] |