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.

A036698 a(n) is the number of Gaussian integers z=a+bi satisfying |z|<=n, a>0, b>=0.

Table of values

n a(n)
0 0
1 1
2 3
3 7
4 12
5 20
6 28
7 37
8 49
9 63
10 79
11 94
12 110
13 132
14 153
15 177
16 199
17 225
18 252
19 282
20 314
21 343
22 379
23 413
24 448
25 490
26 530
27 572
28 613
29 657
30 705
31 750
32 802
33 852
34 906
35 963
36 1013
37 1073
38 1128
39 1194
40 1256
41 1315
42 1381
43 1447
44 1519
45 1590
46 1656

List of values

[0, 1, 3, 7, 12, 20, 28, 37, 49, 63, 79, 94, 110, 132, 153, 177, 199, 225, 252, 282, 314, 343, 379, 413, 448, 490, 530, 572, 613, 657, 705, 750, 802, 852, 906, 963, 1013, 1073, 1128, 1194, 1256, 1315, 1381, 1447, 1519, 1590, 1656]