n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 17 |
3 | 76 |
4 | 353 |
5 | 1684 |
6 | 8177 |
7 | 40156 |
8 | 198593 |
9 | 986404 |
10 | 4912337 |
11 | 24502636 |
12 | 122336033 |
13 | 611148724 |
14 | 3054149297 |
15 | 15265963516 |
16 | 76315468673 |
17 | 381534296644 |
18 | 1907542343057 |
19 | 9537324294796 |
20 | 47685459212513 |
21 | 238423809278164 |
22 | 1192108586037617 |
23 | 5960511549128476 |
[1,4,17,76,353,1684,8177,40156,198593,986404, 4912337,24502636,122336033,611148724,3054149297, 15265963516,76315468673,381534296644, 1907542343057,9537324294796,47685459212513, 238423809278164,1192108586037617,5960511549128476] |