n | a(n) |
---|---|
2 | 1 |
3 | 1 |
4 | 4 |
5 | 10 |
6 | 32 |
7 | 100 |
8 | 329 |
9 | 1101 |
10 | 3761 |
11 | 13035 |
12 | 45751 |
13 | 162261 |
14 | 580639 |
15 | 2093801 |
16 | 7601044 |
17 | 27756626 |
18 | 101888164 |
19 | 375750536 |
20 | 1391512654 |
21 | 5172607766 |
22 | 19293659254 |
23 | 72188904386 |
24 | 270870709264 |
25 | 1019033438060 |
26 | 3842912963392 |
[1,1,4,10,32,100,329,1101,3761,13035,45751,162261, 580639,2093801,7601044,27756626,101888164, 375750536,1391512654,5172607766,19293659254, 72188904386,270870709264,1019033438060, 3842912963392] |