1 1
2 2
3 4
4 15
5 16
6 25
7 60
8 90
9 100
10 124
11 150
12 240
13 375
14 384
15 600
16 618
17 625
18 960
19 1536
20 3330
21 3750
22 4650
23 5760
24 10000
25 10500
26 10752
27 15000
28 16384
29 17500
30 24576
31 25600
32 40000
33 49500
34 62500
35 102400
36 139200
37 168750
38 198400
39 323280
40 526848
41 960000
42 1179648
43 1248000
44 1369125
45 3750000
46 4218750
47 4500000
48 6912000
49 7200000
50 9216000
51 14611860
52 15728640
53 16777216
54 24000000
55 26803125
56 36864000
57 37476000
58 40296960
59 70778880
60 101124000
61 105975000
62 107520000
63 146931840
64 147456000
65 157286400
66 199680000
67 204374016
68 339000000
69 385937500
70 406800000
71 596377600
72 1046845440
73 1509949440
74 1792000000
75 1843200000
76 4274493750
77 5545440000
78 6291456000
79 7568359375
80 8847656250
81 9351780750