n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 47 |
6 | 164 |
7 | 590 |
8 | 2156 |
9 | 7985 |
10 | 29900 |
11 | 113054 |
12 | 431132 |
13 | 1656641 |
14 | 6408776 |
15 | 24942227 |
16 | 97596698 |
17 | 383740409 |
18 | 1515431648 |
19 | 6008307998 |
20 | 23907184340 |
21 | 95439446687 |
22 | 382146649616 |
23 | 1534364232089 |
24 | 6176307411014 |
25 | 24919973908607 |
[1,2,2,5,14,47,164,590,2156,7985,29900,113054, 431132,1656641,6408776,24942227,97596698, 383740409,1515431648,6008307998,23907184340, 95439446687,382146649616,1534364232089, 6176307411014,24919973908607] |