n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 10 |
5 | 25 |
6 | 61 |
7 | 148 |
8 | 358 |
9 | 865 |
10 | 2089 |
11 | 5044 |
12 | 12178 |
13 | 29401 |
14 | 70981 |
15 | 171364 |
16 | 413710 |
17 | 998785 |
18 | 2411281 |
19 | 5821348 |
20 | 14053978 |
21 | 33929305 |
22 | 81912589 |
23 | 197754484 |
24 | 477421558 |
25 | 1152597601 |
26 | 2782616761 |
27 | 6717831124 |
28 | 16218279010 |
29 | 39154389145 |
[1,1,1,4,10,25,61,148,358,865,2089,5044,12178, 29401,70981,171364,413710,998785,2411281,5821348, 14053978,33929305,81912589,197754484,477421558, 1152597601,2782616761,6717831124,16218279010, 39154389145] |