n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 7 |
5 | 19 |
6 | 40 |
7 | 178 |
8 | 379 |
9 | 1237 |
10 | 2941 |
11 | 10378 |
12 | 24628 |
13 | 78928 |
14 | 198820 |
15 | 813550 |
16 | 1971907 |
17 | 6587245 |
18 | 16980079 |
19 | 61488286 |
20 | 155573011 |
21 | 515316037 |
22 | 1363261084 |
23 | 4937498686 |
24 | 12796438252 |
25 | 42078038668 |
26 | 113153315824 |
27 | 390012381346 |
28 | 1036020692356 |
29 | 3379994401042 |
30 | 9240830253940 |
[1,1,1,4,7,19,40,178,379,1237,2941,10378,24628, 78928,198820,813550,1971907,6587245,16980079, 61488286,155573011,515316037,1363261084, 4937498686,12796438252,42078038668,113153315824, 390012381346,1036020692356,3379994401042, 9240830253940] |