n | a(n) |
---|---|
1 | 0 |
2 | 209 |
3 | 108 |
4 | 1744 |
5 | 2809 |
6 | 19068 |
7 | 55382 |
8 | 273621 |
9 | 934066 |
10 | 4202604 |
11 | 15472710 |
12 | 66178236 |
13 | 253206464 |
14 | 1054639996 |
15 | 4118641264 |
16 | 16900720621 |
17 | 66776102270 |
18 | 271648054383 |
19 | 1080722426035 |
20 | 4373896909559 |
21 | 17472759594897 |
22 | 70501053021557 |
[0,209,108,1744,2809,19068,55382,273621,934066, 4202604,15472710,66178236,253206464,1054639996, 4118641264,16900720621,66776102270,271648054383, 1080722426035,4373896909559,17472759594897, 70501053021557] |