n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 20 |
5 | 54 |
6 | 168 |
7 | 518 |
8 | 1702 |
9 | 5672 |
10 | 19413 |
11 | 67329 |
12 | 236994 |
13 | 842362 |
14 | 3022320 |
15 | 10924142 |
16 | 39749219 |
17 | 145457241 |
18 | 534996370 |
19 | 1976582432 |
20 | 7332199623 |
21 | 27298096431 |
22 | 101968071485 |
23 | 382033462335 |
24 | 1435270419582 |
25 | 5405847465772 |
26 | 20408264704999 |
27 | 77211968620103 |
28 | 292706146651697 |
29 | 1111698968597495 |
30 | 4229571286335997 |
31 | 16117966287887641 |
32 | 61515492682026560 |
33 | 235114188287816030 |
34 | 899821838980825557 |
35 | 3448133313264656915 |
[1,1,3,7,20,54,168,518,1702,5672,19413,67329, 236994,842362,3022320,10924142,39749219,145457241, 534996370,1976582432,7332199623,27298096431, 101968071485,382033462335,1435270419582, 5405847465772,20408264704999,77211968620103, 292706146651697,1111698968597495,4229571286335997, 16117966287887641,61515492682026560, 235114188287816030,899821838980825557, 3448133313264656915] |