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.

A183139 a(n) = [1/r]+[2/r]+...+[n/r], where r=sqrt(2) and []=floor.

Table of values

n a(n)
1 0
2 1
3 3
4 5
5 8
6 12
7 16
8 21
9 27
10 34
11 41
12 49
13 58
14 67
15 77
16 88
17 100
18 112
19 125
20 139
21 153
22 168
23 184
24 200
25 217
26 235
27 254
28 273
29 293
30 314
31 335
32 357
33 380
34 404
35 428
36 453
37 479
38 505
39 532
40 560
41 588
42 617
43 647
44 678
45 709
46 741
47 774
48 807
49 841
50 876

List of values

[0, 1, 3, 5, 8, 12, 16, 21, 27, 34, 41, 49, 58, 67, 77, 88, 100, 112, 125, 139, 153, 168, 184, 200, 217, 235, 254, 273, 293, 314, 335, 357, 380, 404, 428, 453, 479, 505, 532, 560, 588, 617, 647, 678, 709, 741, 774, 807, 841, 876]