n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 24 |
4 | 72 |
5 | 196 |
6 | 532 |
7 | 1368 |
8 | 3467 |
9 | 8520 |
10 | 20580 |
11 | 48664 |
12 | 113330 |
13 | 259588 |
14 | 586692 |
15 | 1308304 |
16 | 2883427 |
17 | 6283192 |
18 | 13551344 |
19 | 28940688 |
20 | 61246052 |
21 | 128492516 |
22 | 267388008 |
23 | 552126648 |
24 | 1131750735 |
25 | 2303690862 |
26 | 4658080756 |
27 | 9358912416 |
28 | 18689701580 |
29 | 37106245300 |
30 | 73259451208 |
[1,2,8,24,72,196,532,1368,3467,8520,20580,48664, 113330,259588,586692,1308304,2883427,6283192, 13551344,28940688,61246052,128492516,267388008, 552126648,1131750735,2303690862,4658080756, 9358912416,18689701580,37106245300,73259451208] |