n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 6 |
3 | 33 |
4 | 102 |
5 | 423 |
6 | 1494 |
7 | 5745 |
8 | 21102 |
9 | 79431 |
10 | 295086 |
11 | 1103985 |
12 | 4114710 |
13 | 15367143 |
14 | 57329286 |
15 | 213999153 |
16 | 798569022 |
17 | 2980473543 |
18 | 11122931934 |
19 | 41512040625 |
20 | 154923657702 |
21 | 578185735911 |
22 | 2157812994486 |
23 | 8053078824945 |
24 | 30054477139470 |
25 | 112164880064583 |
[0,3,6,33,102,423,1494,5745,21102,79431,295086, 1103985,4114710,15367143,57329286,213999153, 798569022,2980473543,11122931934,41512040625, 154923657702,578185735911,2157812994486, 8053078824945,30054477139470,112164880064583] |