n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 16 |
5 | 34 |
6 | 90 |
7 | 211 |
8 | 558 |
9 | 1371 |
10 | 3601 |
11 | 9209 |
12 | 24110 |
13 | 61740 |
14 | 157559 |
15 | 390832 |
16 | 946490 |
17 | 2206364 |
18 | 4948194 |
19 | 10591141 |
20 | 21606125 |
21 | 41821936 |
22 | 76738813 |
23 | 133157386 |
24 | 218402867 |
25 | 338187004 |
26 | 494330780 |
27 | 681660841 |
28 | 886842587 |
29 | 1088201827 |
[1,1,3,6,16,34,90,211,558,1371,3601,9209,24110, 61740,157559,390832,946490,2206364,4948194, 10591141,21606125,41821936,76738813,133157386, 218402867,338187004,494330780,681660841,886842587, 1088201827] |