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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.

A136514 Number of unit square lattice cells inside half-plane (two adjacent quadrants) of origin centered circle of radius n.

Table of values

n a(n)
1 0
2 2
3 8
4 16
5 30
6 44
7 60
8 82
9 108
10 138
11 166
12 196
13 238
14 278
15 324
16 366
17 416
18 468
19 526
20 588
21 644
22 714
23 780
24 848
25 930
26 1008
27 1090
28 1170
29 1256
30 1350
31 1438
32 1540
33 1638
34 1744
35 1856
36 1954
37 2072
38 2180
39 2310
40 2432
41 2548
42 2678
43 2808
44 2950
45 3090
46 3220
47 3366
48 3510
49 3664

List of values

[0, 2, 8, 16, 30, 44, 60, 82, 108, 138, 166, 196, 238, 278, 324, 366, 416, 468, 526, 588, 644, 714, 780, 848, 930, 1008, 1090, 1170, 1256, 1350, 1438, 1540, 1638, 1744, 1856, 1954, 2072, 2180, 2310, 2432, 2548, 2678, 2808, 2950, 3090, 3220, 3366, 3510, 3664]

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

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