n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 21 |
6 | 56 |
7 | 164 |
8 | 472 |
9 | 1443 |
10 | 4442 |
11 | 13543 |
12 | 42538 |
13 | 140125 |
14 | 461051 |
15 | 1540007 |
16 | 5230724 |
17 | 17608645 |
18 | 59481321 |
19 | 206130290 |
20 | 720298004 |
21 | 2523815677 |
22 | 8951596054 |
23 | 31724219609 |
24 | 111972880599 |
25 | 399889272475 |
26 | 1443126871712 |
27 | 5216771470535 |
28 | 18978785870361 |
29 | 69268966498148 |
30 | 251874465187235 |
31 | 919122479206908 |
32 | 3382867597156114 |
[1,1,2,4,9,21,56,164,472,1443,4442,13543,42538, 140125,461051,1540007,5230724,17608645,59481321, 206130290,720298004,2523815677,8951596054, 31724219609,111972880599,399889272475, 1443126871712,5216771470535,18978785870361, 69268966498148,251874465187235,919122479206908, 3382867597156114] |