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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.

A347275 a(n) is the number of nonnegative ordered pairs (a,b) satisfying (a+b <= n) and (a*b <= n).

Table of values

n a(n)
0 1
1 3
2 6
3 10
4 15
5 19
6 25
7 29
8 35
9 40
10 46
11 50
12 58
13 62
14 68
15 74
16 81
17 85
18 93
19 97
20 105
21 111
22 117
23 121
24 131
25 136
26 142
27 148
28 156
29 160
30 170
31 174
32 182
33 188
34 194
35 200
36 211
37 215
38 221
39 227
40 237
41 241
42 251
43 255
44 263
45 271
46 277
47 281
48 293
49 298
50 306
51 312
52 320
53 324
54 334
55 340
56 350
57 356

List of values

[1, 3, 6, 10, 15, 19, 25, 29, 35, 40, 46, 50, 58, 62, 68, 74, 81, 85, 93, 97, 105, 111, 117, 121, 131, 136, 142, 148, 156, 160, 170, 174, 182, 188, 194, 200, 211, 215, 221, 227, 237, 241, 251, 255, 263, 271, 277, 281, 293, 298, 306, 312, 320, 324, 334, 340, 350, 356]

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

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