n | a(n) |
---|---|
0 | 4 |
1 | 9 |
2 | 20 |
3 | 44 |
4 | 96 |
5 | 209 |
6 | 455 |
7 | 990 |
8 | 2154 |
9 | 4686 |
10 | 10194 |
11 | 22176 |
12 | 48241 |
13 | 104942 |
14 | 228287 |
15 | 496607 |
16 | 1080300 |
17 | 2350043 |
18 | 5112193 |
19 | 11120867 |
20 | 24191904 |
21 | 52626132 |
22 | 114480851 |
23 | 249037213 |
24 | 541745915 |
25 | 1178493097 |
26 | 2563648273 |
27 | 5576861234 |
28 | 12131688091 |
29 | 26390804748 |
30 | 57409535261 |
[4,9,20,44,96,209,455,990,2154,4686,10194,22176, 48241,104942,228287,496607,1080300,2350043, 5112193,11120867,24191904,52626132,114480851, 249037213,541745915,1178493097,2563648273, 5576861234,12131688091,26390804748,57409535261] |