n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 12 |
4 | 30 |
5 | 75 |
6 | 188 |
7 | 470 |
8 | 1175 |
9 | 2938 |
10 | 7345 |
11 | 18362 |
12 | 45905 |
13 | 114762 |
14 | 286905 |
15 | 717262 |
16 | 1793155 |
17 | 4482888 |
18 | 11207220 |
19 | 28018050 |
20 | 70045125 |
21 | 175112812 |
22 | 437782030 |
23 | 1094455075 |
24 | 2736137688 |
25 | 6840344220 |
26 | 17100860550 |
27 | 42752151375 |
28 | 106880378438 |
[1,2,5,12,30,75,188,470,1175,2938,7345,18362, 45905,114762,286905,717262,1793155,4482888, 11207220,28018050,70045125,175112812,437782030, 1094455075,2736137688,6840344220,17100860550, 42752151375,106880378438] |