n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 8 |
6 | 29 |
7 | 79 |
8 | 280 |
9 | 912 |
10 | 3260 |
11 | 11410 |
12 | 41272 |
13 | 148976 |
14 | 544802 |
15 | 1997499 |
16 | 7372080 |
17 | 27299360 |
18 | 101520714 |
19 | 378721134 |
20 | 1417339352 |
21 | 5318837680 |
22 | 20012141478 |
23 | 75473438326 |
24 | 285268537424 |
25 | 1080433781728 |
26 | 4099860518208 |
27 | 15585111068644 |
28 | 59343308199216 |
29 | 226312777319776 |
[0,1,1,4,8,29,79,280,912,3260,11410,41272,148976, 544802,1997499,7372080,27299360,101520714, 378721134,1417339352,5318837680,20012141478, 75473438326,285268537424,1080433781728, 4099860518208,15585111068644,59343308199216, 226312777319776] |