n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 6 |
3 | 19 |
4 | 51 |
5 | 129 |
6 | 361 |
7 | 939 |
8 | 2433 |
9 | 6376 |
10 | 16362 |
11 | 41970 |
12 | 107206 |
13 | 271881 |
14 | 687999 |
15 | 1733695 |
16 | 4352877 |
17 | 10899381 |
18 | 27208492 |
19 | 67745649 |
20 | 168275466 |
21 | 417023747 |
22 | 1031321451 |
23 | 2545496316 |
24 | 6271166097 |
25 | 15423190770 |
26 | 37869769518 |
27 | 92842013185 |
[1,3,6,19,51,129,361,939,2433,6376,16362,41970, 107206,271881,687999,1733695,4352877,10899381, 27208492,67745649,168275466,417023747,1031321451, 2545496316,6271166097,15423190770,37869769518, 92842013185] |