n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 51 |
5 | 205 |
6 | 819 |
7 | 3277 |
8 | 13107 |
9 | 52429 |
10 | 209715 |
11 | 838861 |
12 | 3355443 |
13 | 13421773 |
14 | 53687091 |
15 | 214748365 |
16 | 858993459 |
17 | 3435973837 |
18 | 13743895347 |
19 | 54975581389 |
20 | 219902325555 |
21 | 879609302221 |
22 | 3518437208883 |
23 | 14073748835533 |
[0,1,3,13,51,205,819,3277,13107,52429,209715, 838861,3355443,13421773,53687091,214748365, 858993459,3435973837,13743895347,54975581389, 219902325555,879609302221,3518437208883, 14073748835533] |