n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 19 |
4 | 61 |
5 | 202 |
6 | 683 |
7 | 2348 |
8 | 8184 |
9 | 28855 |
10 | 102731 |
11 | 368813 |
12 | 1333684 |
13 | 4853436 |
14 | 17761181 |
15 | 65320691 |
16 | 241300829 |
17 | 894958140 |
18 | 3331323651 |
19 | 12441078958 |
20 | 46601721324 |
21 | 175040968111 |
22 | 659136721385 |
23 | 2487852579751 |
24 | 9410480922018 |
[1,2,6,19,61,202,683,2348,8184,28855,102731, 368813,1333684,4853436,17761181,65320691, 241300829,894958140,3331323651,12441078958, 46601721324,175040968111,659136721385, 2487852579751,9410480922018] |