n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 66 |
3 | 255 |
4 | 903 |
5 | 2970 |
6 | 8571 |
7 | 23001 |
8 | 59763 |
9 | 145164 |
10 | 333693 |
11 | 751059 |
12 | 1623009 |
13 | 3363576 |
14 | 6872307 |
15 | 13677228 |
16 | 26351985 |
17 | 50309910 |
18 | 94392525 |
19 | 172538934 |
20 | 313558506 |
21 | 563064207 |
22 | 988996095 |
23 | 1730456433 |
24 | 3001805067 |
25 | 5106353439 |
[1,12,66,255,903,2970,8571,23001,59763,145164, 333693,751059,1623009,3363576,6872307,13677228, 26351985,50309910,94392525,172538934,313558506, 563064207,988996095,1730456433,3001805067, 5106353439] |