n | a(n) |
---|---|
0 | 4 |
1 | 13 |
2 | 45 |
3 | 153 |
4 | 523 |
5 | 1785 |
6 | 6095 |
7 | 20809 |
8 | 71047 |
9 | 242569 |
10 | 828183 |
11 | 2827593 |
12 | 9654007 |
13 | 32960841 |
14 | 112535351 |
15 | 384219721 |
16 | 1311808183 |
17 | 4478793289 |
18 | 15291556791 |
19 | 52208640585 |
20 | 178251448759 |
21 | 608588513865 |
22 | 2077851157943 |
23 | 7094227604041 |
24 | 24221208100279 |
25 | 82696377193033 |
[4,13,45,153,523,1785,6095,20809,71047,242569, 828183,2827593,9654007,32960841,112535351, 384219721,1311808183,4478793289,15291556791, 52208640585,178251448759,608588513865, 2077851157943,7094227604041,24221208100279, 82696377193033] |