n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 4 |
5 | 15 |
6 | 23 |
7 | 94 |
8 | 155 |
9 | 661 |
10 | 1139 |
11 | 4983 |
12 | 8844 |
13 | 39362 |
14 | 71360 |
15 | 321561 |
16 | 592361 |
17 | 2694421 |
18 | 5025849 |
19 | 23029195 |
20 | 43388208 |
21 | 199990961 |
22 | 379900479 |
23 | 1759636142 |
24 | 3365582261 |
25 | 15652514944 |
26 | 30112397278 |
27 | 140531706444 |
28 | 271707661708 |
[1,1,3,4,15,23,94,155,661,1139,4983,8844,39362, 71360,321561,592361,2694421,5025849,23029195, 43388208,199990961,379900479,1759636142, 3365582261,15652514944,30112397278,140531706444, 271707661708] |