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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.

A323625 The (2,1) diagonal of the order of square grid cells touched by a circle expanding from the middle of a cell.

Table of values

n a(n)
0 0
1 4
2 11
3 21
4 34
5 49
6 68
7 90
8 112
9 137
10 167
11 198
12 230
13 265
14 305
15 345
16 388
17 432
18 480
19 529
20 583
21 635
22 692
23 752
24 812
25 876
26 941
27 1010
28 1079
29 1151
30 1225
31 1305
32 1383
33 1462
34 1545
35 1630
36 1720
37 1811
38 1901
39 1995
40 2092
41 2190
42 2287
43 2391
44 2499
45 2606
46 2715
47 2827
48 2941
49 3056
50 3174
51 3295
52 3421
53 3541
54 3668
55 3792
56 3923
57 4058
58 4193
59 4333
60 4466
61 4609
62 4754
63 4899
64 5042
65 5194
66 5344
67 5498
68 5654
69 5813
70 5972
71 6133

List of values

[0, 4, 11, 21, 34, 49, 68, 90, 112, 137, 167, 198, 230, 265, 305, 345, 388, 432, 480, 529, 583, 635, 692, 752, 812, 876, 941, 1010, 1079, 1151, 1225, 1305, 1383, 1462, 1545, 1630, 1720, 1811, 1901, 1995, 2092, 2190, 2287, 2391, 2499, 2606, 2715, 2827, 2941, 3056, 3174, 3295, 3421, 3541, 3668, 3792, 3923, 4058, 4193, 4333, 4466, 4609, 4754, 4899, 5042, 5194, 5344, 5498, 5654, 5813, 5972, 6133]

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

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