n | a(n) |
---|---|
0 | 2 |
1 | 7 |
2 | 23 |
3 | 78 |
4 | 274 |
5 | 988 |
6 | 3628 |
7 | 13495 |
8 | 50675 |
9 | 191673 |
10 | 729145 |
11 | 2786655 |
12 | 10691111 |
13 | 41150011 |
14 | 158825371 |
15 | 614483086 |
16 | 2382366586 |
17 | 9253540456 |
18 | 36001307656 |
19 | 140269835866 |
20 | 547245301906 |
21 | 2137552658206 |
22 | 8358366985726 |
23 | 32715599554876 |
24 | 128168506456852 |
25 | 502538379368656 |
26 | 1971926625140816 |
[2,7,23,78,274,988,3628,13495,50675,191673,729145, 2786655,10691111,41150011,158825371,614483086, 2382366586,9253540456,36001307656,140269835866, 547245301906,2137552658206,8358366985726, 32715599554876,128168506456852,502538379368656, 1971926625140816] |