n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 6 |
6 | 10 |
7 | 18 |
8 | 30 |
9 | 42 |
10 | 78 |
11 | 114 |
12 | 186 |
13 | 294 |
14 | 390 |
15 | 582 |
16 | 798 |
17 | 1194 |
18 | 1950 |
19 | 2922 |
20 | 4074 |
21 | 5586 |
22 | 7770 |
23 | 11154 |
24 | 15810 |
25 | 22110 |
26 | 30702 |
27 | 42570 |
28 | 53130 |
29 | 68970 |
30 | 105090 |
31 | 159390 |
32 | 206910 |
33 | 278850 |
34 | 361410 |
35 | 462210 |
36 | 688722 |
37 | 1019202 |
38 | 1389810 |
39 | 2053770 |
40 | 3011850 |
[0,1,2,4,6,10,18,30,42,78,114,186,294,390,582,798, 1194,1950,2922,4074,5586,7770,11154,15810,22110, 30702,42570,53130,68970,105090,159390,206910, 278850,361410,462210,688722,1019202,1389810, 2053770,3011850] |