n | a(n) |
---|---|
0 | 2 |
1 | 6 |
2 | 34 |
3 | 198 |
4 | 1154 |
5 | 6726 |
6 | 39202 |
7 | 228486 |
8 | 1331714 |
9 | 7761798 |
10 | 45239074 |
11 | 263672646 |
12 | 1536796802 |
13 | 8957108166 |
14 | 52205852194 |
15 | 304278004998 |
16 | 1773462177794 |
17 | 10336495061766 |
18 | 60245508192802 |
19 | 351136554095046 |
20 | 2046573816377474 |
21 | 11928306344169798 |
22 | 69523264248641314 |
[2,6,34,198,1154,6726,39202,228486,1331714, 7761798,45239074,263672646,1536796802,8957108166, 52205852194,304278004998,1773462177794, 10336495061766,60245508192802,351136554095046, 2046573816377474,11928306344169798, 69523264248641314] |