n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 25 |
4 | 67 |
5 | 175 |
6 | 449 |
7 | 1137 |
8 | 2851 |
9 | 7095 |
10 | 17553 |
11 | 43225 |
12 | 106051 |
13 | 259423 |
14 | 633089 |
15 | 1541985 |
16 | 3749827 |
17 | 9107175 |
18 | 22095249 |
19 | 53559817 |
20 | 129739171 |
21 | 314086735 |
22 | 760009793 |
23 | 1838300625 |
24 | 4444999651 |
25 | 10745077143 |
26 | 25968708369 |
27 | 62749602745 |
[1,3,9,25,67,175,449,1137,2851,7095,17553,43225, 106051,259423,633089,1541985,3749827,9107175, 22095249,53559817,129739171,314086735,760009793, 1838300625,4444999651,10745077143,25968708369, 62749602745] |