n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 7 |
4 | 21 |
5 | 51 |
6 | 138 |
7 | 358 |
8 | 969 |
9 | 2735 |
10 | 7514 |
11 | 21372 |
12 | 60144 |
13 | 171510 |
14 | 485294 |
15 | 1388586 |
16 | 3949211 |
17 | 11296953 |
18 | 32294750 |
19 | 92471813 |
20 | 265484354 |
21 | 762548923 |
22 | 2194099432 |
23 | 6318266076 |
24 | 18214160616 |
25 | 52525201261 |
26 | 151638570041 |
27 | 437959067720 |
28 | 1265890334086 |
29 | 3661612407681 |
[1,2,3,7,21,51,138,358,969,2735,7514,21372,60144, 171510,485294,1388586,3949211,11296953,32294750, 92471813,265484354,762548923,2194099432, 6318266076,18214160616,52525201261,151638570041, 437959067720,1265890334086,3661612407681] |