n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 27 |
5 | 118 |
6 | 539 |
7 | 2582 |
8 | 12736 |
9 | 64363 |
10 | 331239 |
11 | 1730575 |
12 | 9153221 |
13 | 48917102 |
14 | 263737228 |
15 | 1432790266 |
16 | 7835499474 |
17 | 43099916199 |
18 | 238299581172 |
19 | 1323627927733 |
20 | 7382441210007 |
21 | 41328639721641 |
22 | 232150252111223 |
23 | 1308049090247417 |
[1,1,2,7,27,118,539,2582,12736,64363,331239, 1730575,9153221,48917102,263737228,1432790266, 7835499474,43099916199,238299581172,1323627927733, 7382441210007,41328639721641,232150252111223, 1308049090247417] |