n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 18 |
5 | 44 |
6 | 110 |
7 | 272 |
8 | 676 |
9 | 1676 |
10 | 4160 |
11 | 10320 |
12 | 25608 |
13 | 63536 |
14 | 157648 |
15 | 391152 |
16 | 970528 |
17 | 2408064 |
18 | 5974880 |
19 | 14824832 |
20 | 36783296 |
21 | 91266496 |
22 | 226449920 |
23 | 561866240 |
24 | 1394099328 |
25 | 3459031296 |
26 | 8582528768 |
27 | 21294921472 |
28 | 52836837888 |
29 | 131098461184 |
[1,1,3,7,18,44,110,272,676,1676,4160,10320,25608, 63536,157648,391152,970528,2408064,5974880, 14824832,36783296,91266496,226449920,561866240, 1394099328,3459031296,8582528768,21294921472, 52836837888,131098461184] |