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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.

A159919 A square array of numbers, read by antidiagonals, called Sundaram's sieve.

Table of values

n a(n)
1 4
2 7
3 7
4 10
5 12
6 10
7 13
8 17
9 17
10 13
11 16
12 22
13 24
14 22
15 16
16 19
17 27
18 31
19 31
20 27
21 19
22 22
23 32
24 38
25 40
26 38
27 32
28 22
29 25
30 37
31 45
32 49
33 49
34 45
35 37
36 25
37 28
38 42
39 52
40 58
41 60
42 58
43 52
44 42
45 28
46 31
47 47
48 59
49 67
50 71
51 71
52 67
53 59
54 47
55 31
56 34
57 52
58 66
59 76
60 82
61 84
62 82
63 76
64 66
65 52
66 34

List of values

[4, 7, 7, 10, 12, 10, 13, 17, 17, 13, 16, 22, 24, 22, 16, 19, 27, 31, 31, 27, 19, 22, 32, 38, 40, 38, 32, 22, 25, 37, 45, 49, 49, 45, 37, 25, 28, 42, 52, 58, 60, 58, 52, 42, 28, 31, 47, 59, 67, 71, 71, 67, 59, 47, 31, 34, 52, 66, 76, 82, 84, 82, 76, 66, 52, 34]

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

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