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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.

A377033 Array read by antidiagonals downward where A(n,k) is the n-th term of the k-th differences of the composite numbers (A002808).

Table of values

n a(n)
0 4
1 6
2 2
3 8
4 2
5 0
6 9
7 1
8 -1
9 -1
10 10
11 1
12 0
13 1
14 2
15 12
16 2
17 1
18 1
19 0
20 -2
21 14
22 2
23 0
24 -1
25 -2
26 -2
27 0
28 15
29 1
30 -1
31 -1
32 0
33 2
34 4
35 4
36 16
37 1
38 0
39 1
40 2
41 2
42 0
43 -4
44 -8
45 18
46 2
47 1
48 1
49 0
50 -2
51 -4
52 -4
53 0
54 8
55 20
56 2
57 0
58 -1
59 -2
60 -2
61 0
62 4
63 8
64 8
65 0
66 21
67 1
68 -1
69 -1
70 0
71 2
72 4
73 4
74 0
75 -8
76 -16
77 -16

List of values

[4, 6, 2, 8, 2, 0, 9, 1, -1, -1, 10, 1, 0, 1, 2, 12, 2, 1, 1, 0, -2, 14, 2, 0, -1, -2, -2, 0, 15, 1, -1, -1, 0, 2, 4, 4, 16, 1, 0, 1, 2, 2, 0, -4, -8, 18, 2, 1, 1, 0, -2, -4, -4, 0, 8, 20, 2, 0, -1, -2, -2, 0, 4, 8, 8, 0, 21, 1, -1, -1, 0, 2, 4, 4, 0, -8, -16, -16]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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