n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 32 |
6 | 96 |
7 | 280 |
8 | 840 |
9 | 2496 |
10 | 7488 |
11 | 22400 |
12 | 67200 |
13 | 201408 |
14 | 604224 |
15 | 1812112 |
16 | 5436336 |
17 | 16307328 |
18 | 48921984 |
19 | 146760960 |
20 | 440282880 |
21 | 1320833664 |
22 | 3962500992 |
23 | 11887458176 |
24 | 35662374528 |
25 | 106986989184 |
26 | 320960967552 |
27 | 962882499840 |
28 | 2888647499520 |
29 | 8665941290112 |
[1,2,4,12,32,96,280,840,2496,7488,22400,67200, 201408,604224,1812112,5436336,16307328,48921984, 146760960,440282880,1320833664,3962500992, 11887458176,35662374528,106986989184,320960967552, 962882499840,2888647499520,8665941290112] |