n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 28 |
4 | 108 |
5 | 344 |
6 | 1224 |
7 | 4080 |
8 | 14128 |
9 | 47840 |
10 | 164128 |
11 | 558784 |
12 | 1910976 |
13 | 6518144 |
14 | 22267008 |
15 | 75998976 |
16 | 259527424 |
17 | 885980672 |
18 | 3025129984 |
19 | 10328034304 |
20 | 35262925824 |
21 | 120393537536 |
22 | 411052492800 |
23 | 1403414507520 |
24 | 4791569821696 |
25 | 16359416717312 |
26 | 55854594334720 |
[1,2,10,28,108,344,1224,4080,14128,47840,164128, 558784,1910976,6518144,22267008,75998976, 259527424,885980672,3025129984,10328034304, 35262925824,120393537536,411052492800, 1403414507520,4791569821696,16359416717312, 55854594334720] |