n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 20 |
3 | 102 |
4 | 360 |
5 | 1002 |
6 | 2364 |
7 | 4942 |
8 | 9424 |
9 | 16722 |
10 | 28004 |
11 | 44726 |
12 | 68664 |
13 | 101946 |
14 | 147084 |
15 | 207006 |
16 | 285088 |
17 | 385186 |
18 | 511668 |
19 | 669446 |
20 | 864008 |
21 | 1101450 |
22 | 1388508 |
23 | 1732590 |
24 | 2141808 |
25 | 2625010 |
26 | 3191812 |
27 | 3852630 |
28 | 4618712 |
29 | 5502170 |
30 | 6516012 |
[0,2,20,102,360,1002,2364,4942,9424,16722,28004, 44726,68664,101946,147084,207006,285088,385186, 511668,669446,864008,1101450,1388508,1732590, 2141808,2625010,3191812,3852630,4618712,5502170, 6516012] |