n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 27 |
4 | 108 |
5 | 440 |
6 | 1812 |
7 | 7514 |
8 | 31307 |
9 | 130883 |
10 | 548547 |
11 | 2303413 |
12 | 9686617 |
13 | 40783083 |
14 | 171868037 |
15 | 724837891 |
16 | 3058850316 |
17 | 12915186640 |
18 | 54554594416 |
19 | 230526280814 |
20 | 974414815782 |
21 | 4119854160332 |
22 | 17422801069670 |
23 | 73695109608352 |
24 | 311768697325788 |
25 | 1319136935150530 |
[1,2,7,27,108,440,1812,7514,31307,130883,548547, 2303413,9686617,40783083,171868037,724837891, 3058850316,12915186640,54554594416,230526280814, 974414815782,4119854160332,17422801069670, 73695109608352,311768697325788,1319136935150530] |