n | a(n) |
---|---|
1 | 2 |
2 | 5 |
3 | 12 |
4 | 33 |
5 | 90 |
6 | 261 |
7 | 756 |
8 | 2241 |
9 | 6642 |
10 | 19845 |
11 | 59292 |
12 | 177633 |
13 | 532170 |
14 | 1595781 |
15 | 4785156 |
16 | 14353281 |
17 | 43053282 |
18 | 129153285 |
19 | 387440172 |
20 | 1162300833 |
21 | 3486843450 |
22 | 10460471301 |
23 | 31381236756 |
24 | 94143533121 |
25 | 282430067922 |
26 | 847289672325 |
27 | 2541867422652 |
28 | 7625600673633 |
[2,5,12,33,90,261,756,2241,6642,19845,59292, 177633,532170,1595781,4785156,14353281,43053282, 129153285,387440172,1162300833,3486843450, 10460471301,31381236756,94143533121,282430067922, 847289672325,2541867422652,7625600673633] |