n | a(n) |
---|---|
9 | 1 |
10 | 4 |
11 | 19 |
12 | 66 |
13 | 219 |
14 | 645 |
15 | 1813 |
16 | 4802 |
17 | 12265 |
18 | 30198 |
19 | 72396 |
20 | 169231 |
21 | 387707 |
22 | 871989 |
23 | 1930868 |
24 | 4215615 |
25 | 9091410 |
26 | 19389327 |
27 | 40944999 |
28 | 85691893 |
29 | 177898521 |
30 | 366614456 |
31 | 750494796 |
32 | 1526979694 |
33 | 3089556090 |
34 | 6219191608 |
35 | 12460307373 |
36 | 24856533408 |
37 | 49387348955 |
38 | 97765283686 |
39 | 192870793594 |
40 | 379287172272 |
[1,4,19,66,219,645,1813,4802,12265,30198,72396, 169231,387707,871989,1930868,4215615,9091410, 19389327,40944999,85691893,177898521,366614456, 750494796,1526979694,3089556090,6219191608, 12460307373,24856533408,49387348955,97765283686, 192870793594,379287172272] |