n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 34 |
4 | 134 |
5 | 498 |
6 | 1894 |
7 | 7138 |
8 | 26998 |
9 | 101970 |
10 | 385350 |
11 | 1455938 |
12 | 5501334 |
13 | 20786354 |
14 | 78540646 |
15 | 296762018 |
16 | 1121303222 |
17 | 4236795154 |
18 | 16008550278 |
19 | 60487618562 |
20 | 228549876182 |
21 | 863565901682 |
22 | 3262946735526 |
23 | 12328904308578 |
[1,2,10,34,134,498,1894,7138,26998,101970,385350, 1455938,5501334,20786354,78540646,296762018, 1121303222,4236795154,16008550278,60487618562, 228549876182,863565901682,3262946735526, 12328904308578] |