n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 8 |
3 | 52 |
4 | 304 |
5 | 1650 |
6 | 8492 |
7 | 42000 |
8 | 201356 |
9 | 941367 |
10 | 4310480 |
11 | 19395042 |
12 | 85972228 |
13 | 376185250 |
14 | 1627518840 |
15 | 6971209090 |
16 | 29595604656 |
17 | 124648174343 |
18 | 521225809112 |
19 | 2165408553994 |
20 | 8942942384500 |
21 | 36733935375275 |
22 | 150138939637144 |
23 | 610840125062072 |
24 | 2474686297520984 |
25 | 9986301300789540 |
[0,1,8,52,304,1650,8492,42000,201356,941367, 4310480,19395042,85972228,376185250,1627518840, 6971209090,29595604656,124648174343,521225809112, 2165408553994,8942942384500,36733935375275, 150138939637144,610840125062072,2474686297520984, 9986301300789540] |