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A004020 formatted as a simple table:

n a(n)
0 2
1 4
2 2
3 4
4 4
5 0
6 6
7 4
8 0
9 4
10 4
11 4
12 2
13 4
14 0
15 4
16 8
17 0
18 4
19 0
20 2
21 8
22 4
23 0
24 4
25 4
26 0
27 4
28 4
29 4
30 2
31 8
32 0
33 0
34 4
35 0
36 8
37 4
38 4
39 4
40 0
41 0
42 6
43 4
44 0
45 4
46 8
47 0
48 4
49 4
50 0
51 8
52 0
53 0
54 0
55 8
56 6
57 4
58 4
59 0
60 4
61 4
62 0
63 0
64 4
65 4
66 8
67 4
68 0
69 4
70 4
71 0
72 6
73 4
74 0
75 0
76 8
77 0
78 4
79 4
80 0
81 12
82 0
83 4
84 4
85 0
86 0
87 4
88 4
89 0
90 2
91 8
92 4
93 4
94 8
95 0
96 0
97 4
98 0
99 4
100 4
101 4
102 4
103 0

[2,4,2,4,4,0,6,4,0,4,4,4,2,4,0,4,8,0,4,0,2,8,4,0,
 4,4,0,4,4,4,2,8,0,0,4,0,8,4,4,4,0,0,6,4,0,4,8,0,4,
 4,0,8,0,0,0,8,6,4,4,0,4,4,0,0,4,4,8,4,0,4,4,0,6,4,
 0,0,8,0,4,4,0,12,0,4,4,0,0,4,4,0,2,8,4,4,8,0,0,4,
 0,4,4,4,4,0]

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.


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