cp's OEIS Frontend

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.

A278290 Number of neighbors of each new term in a square array read by antidiagonals.

Table of values

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

List of values

[0, 1, 2, 1, 4, 2, 1, 4, 4, 2, 1, 4, 4, 4, 2, 1, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2]