n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 68 |
7 | 176 |
8 | 454 |
9 | 1174 |
10 | 3052 |
11 | 7976 |
12 | 20932 |
13 | 55108 |
14 | 145448 |
15 | 384704 |
16 | 1019462 |
17 | 2706214 |
18 | 7194956 |
19 | 19155896 |
20 | 51065260 |
21 | 136284236 |
22 | 364097912 |
23 | 973654240 |
24 | 2605983772 |
25 | 6980545276 |
26 | 18712478072 |
27 | 50196568144 |
28 | 134739960904 |
29 | 361892443592 |
30 | 972537193168 |
[1,1,2,4,10,26,68,176,454,1174,3052,7976,20932, 55108,145448,384704,1019462,2706214,7194956, 19155896,51065260,136284236,364097912,973654240, 2605983772,6980545276,18712478072,50196568144, 134739960904,361892443592,972537193168] |