n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 12 |
4 | 36 |
5 | 105 |
6 | 359 |
7 | 1234 |
8 | 4179 |
9 | 15184 |
10 | 55991 |
11 | 204578 |
12 | 771394 |
13 | 2964054 |
14 | 11327531 |
15 | 43884270 |
16 | 172977384 |
17 | 680790080 |
18 | 2693644347 |
19 | 10800095655 |
20 | 43381674853 |
21 | 174545003823 |
22 | 708672027933 |
23 | 2888280123869 |
24 | 11778061217176 |
25 | 48301653756423 |
26 | 198967324198300 |
27 | 820165234102410 |
28 | 3391901879073496 |
[1,2,4,12,36,105,359,1234,4179,15184,55991,204578, 771394,2964054,11327531,43884270,172977384, 680790080,2693644347,10800095655,43381674853, 174545003823,708672027933,2888280123869, 11778061217176,48301653756423,198967324198300, 820165234102410,3391901879073496] |