n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 14 |
3 | 42 |
4 | 118 |
5 | 304 |
6 | 747 |
7 | 1748 |
8 | 3949 |
9 | 8620 |
10 | 18296 |
11 | 37818 |
12 | 76398 |
13 | 151022 |
14 | 292754 |
15 | 557130 |
16 | 1042364 |
17 | 1919044 |
18 | 3480203 |
19 | 6221668 |
20 | 10973326 |
21 | 19106264 |
22 | 32862300 |
23 | 55865180 |
24 | 93915547 |
25 | 156203520 |
26 | 257157134 |
27 | 419217118 |
28 | 676991229 |
29 | 1083396912 |
30 | 1718709997 |
31 | 2703754666 |
[1,4,14,42,118,304,747,1748,3949,8620,18296,37818, 76398,151022,292754,557130,1042364,1919044, 3480203,6221668,10973326,19106264,32862300, 55865180,93915547,156203520,257157134,419217118, 676991229,1083396912,1718709997,2703754666] |