n | a(n) |
---|---|
1 | 3 |
2 | 2 |
3 | 5 |
4 | 18 |
5 | 77 |
6 | 364 |
7 | 1836 |
8 | 9690 |
9 | 52877 |
10 | 296010 |
11 | 1690845 |
12 | 9817080 |
13 | 57769740 |
14 | 343806368 |
15 | 2065802056 |
16 | 12515350122 |
17 | 76367432013 |
18 | 468922828150 |
19 | 2895381678735 |
20 | 17966214519330 |
21 | 111977263221285 |
22 | 700704492237540 |
23 | 4400559613086000 |
24 | 27727270719559320 |
25 | 175230257041962252 |
[3,2,5,18,77,364,1836,9690,52877,296010,1690845, 9817080,57769740,343806368,2065802056,12515350122, 76367432013,468922828150,2895381678735, 17966214519330,111977263221285,700704492237540, 4400559613086000,27727270719559320, 175230257041962252] |