n | a(n) |
---|---|
0 | 0 |
1 | 4 |
2 | 20 |
3 | 60 |
4 | 140 |
5 | 280 |
6 | 504 |
7 | 840 |
8 | 1320 |
9 | 1980 |
10 | 2860 |
11 | 4004 |
12 | 5460 |
13 | 7280 |
14 | 9520 |
15 | 12240 |
16 | 15504 |
17 | 19380 |
18 | 23940 |
19 | 29260 |
20 | 35420 |
21 | 42504 |
22 | 50600 |
23 | 59800 |
24 | 70200 |
25 | 81900 |
26 | 95004 |
27 | 109620 |
28 | 125860 |
29 | 143840 |
30 | 163680 |
31 | 185504 |
32 | 209440 |
[0,4,20,60,140,280,504,840,1320,1980,2860,4004, 5460,7280,9520,12240,15504,19380,23940,29260, 35420,42504,50600,59800,70200,81900,95004,109620, 125860,143840,163680,185504,209440] |