n | a(n) |
---|---|
0 | 3 |
1 | 11 |
2 | 40 |
3 | 145 |
4 | 526 |
5 | 1908 |
6 | 6921 |
7 | 25105 |
8 | 91065 |
9 | 330326 |
10 | 1198213 |
11 | 4346356 |
12 | 15765820 |
13 | 57188385 |
14 | 207443151 |
15 | 752472043 |
16 | 2729490816 |
17 | 9900859685 |
18 | 35914032730 |
19 | 130273308376 |
20 | 472548850273 |
21 | 1714107200301 |
22 | 6217692609825 |
23 | 22553841080350 |
24 | 81811015661001 |
25 | 296758421753528 |
[3,11,40,145,526,1908,6921,25105,91065,330326, 1198213,4346356,15765820,57188385,207443151, 752472043,2729490816,9900859685,35914032730, 130273308376,472548850273,1714107200301, 6217692609825,22553841080350,81811015661001, 296758421753528] |