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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A284441 Base-3 generalized Pascal triangle P_3 read by rows (see Comments for precise definition).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 0
5 1
6 1
7 1
8 0
9 1
10 1
11 2
12 0
13 0
14 1
15 1
16 1
17 1
18 0
19 0
20 1
21 1
22 0
23 1
24 0
25 0
26 0
27 1
28 1
29 1
30 1
31 0
32 0
33 0
34 0
35 1
36 1
37 0
38 2
39 0
40 0
41 0
42 0
43 0
44 1
45 1
46 1
47 0
48 2
49 0
50 0
51 0
52 0
53 0
54 1
55 1
56 2
57 0
58 1
59 1
60 0
61 0
62 0
63 0
64 0
65 1
66 1
67 1
68 1
69 1
70 0
71 1
72 0
73 0
74 0
75 0
76 0
77 1
78 1
79 2
80 0
81 2
82 1
83 0
84 0
85 0
86 0
87 0
88 0
89 0
90 1
91 1
92 3
93 0
94 0
95 3
96 0
97 0
98 0
99 0
100 0
101 0
102 0
103 0
104 1
105 1
106 2
107 1
108 0
109 1
110 2
111 0
112 0
113 0
114 0
115 0
116 0
117 0
118 0
119 1
120 1

List of values

[1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 2, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 2, 0, 0, 0, 0, 0, 1, 1, 1, 0, 2, 0, 0, 0, 0, 0, 1, 1, 2, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 2, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 3, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 1, 0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1]