n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 19 |
5 | 48 |
6 | 163 |
7 | 458 |
8 | 1623 |
9 | 4873 |
10 | 17694 |
11 | 55688 |
12 | 205205 |
13 | 667727 |
14 | 2489066 |
15 | 8303744 |
16 | 31230747 |
17 | 106263877 |
18 | 402383332 |
19 | 1391009865 |
20 | 5296310843 |
21 | 18547893105 |
22 | 70941590289 |
23 | 251157988654 |
24 | 964231083001 |
25 | 3445375249027 |
26 | 13269521569994 |
27 | 47791310089513 |
28 | 184566314074674 |
29 | 669325853528842 |
30 | 2590981483348106 |
[1,1,3,6,19,48,163,458,1623,4873,17694,55688, 205205,667727,2489066,8303744,31230747,106263877, 402383332,1391009865,5296310843,18547893105, 70941590289,251157988654,964231083001, 3445375249027,13269521569994,47791310089513, 184566314074674,669325853528842,2590981483348106] |