n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 7 |
3 | 21 |
4 | 48 |
5 | 112 |
6 | 336 |
7 | 861 |
8 | 1968 |
9 | 4592 |
10 | 13776 |
11 | 33936 |
12 | 86961 |
13 | 198768 |
14 | 463792 |
15 | 1391376 |
16 | 3402672 |
17 | 8382192 |
18 | 21479367 |
19 | 49095696 |
20 | 114556624 |
21 | 343669872 |
22 | 852913488 |
23 | 2085837936 |
24 | 5138283696 |
25 | 13166851971 |
26 | 30095661648 |
27 | 70223210512 |
[1,3,7,21,48,112,336,861,1968,4592,13776,33936, 86961,198768,463792,1391376,3402672,8382192, 21479367,49095696,114556624,343669872,852913488, 2085837936,5138283696,13166851971,30095661648, 70223210512] |