n | a(n) |
---|---|
1 | 3 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 6 |
6 | 9 |
7 | 18 |
8 | 30 |
9 | 56 |
10 | 99 |
11 | 186 |
12 | 335 |
13 | 630 |
14 | 1161 |
15 | 2182 |
16 | 4080 |
17 | 7710 |
18 | 14532 |
19 | 27594 |
20 | 52377 |
21 | 99858 |
22 | 190557 |
23 | 364722 |
24 | 698870 |
25 | 1342176 |
26 | 2580795 |
27 | 4971008 |
28 | 9586395 |
29 | 18512790 |
30 | 35790267 |
31 | 69273666 |
32 | 134215680 |
33 | 260300986 |
34 | 505286415 |
35 | 981706806 |
36 | 1908866960 |
37 | 3714566310 |
[3,1,2,3,6,9,18,30,56,99,186,335,630,1161,2182, 4080,7710,14532,27594,52377,99858,190557,364722, 698870,1342176,2580795,4971008,9586395,18512790, 35790267,69273666,134215680,260300986,505286415, 981706806,1908866960,3714566310] |