n | a(n) |
---|---|
0 | 4 |
1 | 3 |
2 | 9 |
3 | 17 |
4 | 40 |
5 | 92 |
6 | 215 |
7 | 506 |
8 | 1200 |
9 | 2861 |
10 | 6848 |
11 | 16436 |
12 | 39523 |
13 | 95162 |
14 | 229328 |
15 | 552977 |
16 | 1333920 |
17 | 3218612 |
18 | 7767575 |
19 | 18747986 |
20 | 45254200 |
21 | 109241261 |
22 | 263712248 |
23 | 636626156 |
24 | 1536900483 |
25 | 3710323442 |
[4,3,9,17,40,92,215,506,1200,2861,6848,16436, 39523,95162,229328,552977,1333920,3218612,7767575, 18747986,45254200,109241261,263712248,636626156, 1536900483,3710323442] |