n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 15 |
4 | 45 |
5 | 105 |
6 | 264 |
7 | 555 |
8 | 1221 |
9 | 2445 |
10 | 4935 |
11 | 9324 |
12 | 17941 |
13 | 32522 |
14 | 59400 |
15 | 104808 |
16 | 184569 |
17 | 315711 |
18 | 540540 |
19 | 902335 |
20 | 1504800 |
21 | 2462724 |
22 | 4014513 |
23 | 6444425 |
24 | 10316250 |
25 | 16283707 |
26 | 25610886 |
27 | 39841865 |
28 | 61720659 |
29 | 94687230 |
30 | 144731706 |
31 | 219282679 |
32 | 330996105 |
33 | 495901413 |
34 | 740046425 |
[1,5,15,45,105,264,555,1221,2445,4935,9324,17941, 32522,59400,104808,184569,315711,540540,902335, 1504800,2462724,4014513,6444425,10316250,16283707, 25610886,39841865,61720659,94687230,144731706, 219282679,330996105,495901413,740046425] |