A127403 - cp's OEIS frontend

A127403 Number of points in a honeycomb net covered by a circular disk of diameter n if the center of the circle is chosen at a grid point.

n	a(n)
0	1
1	1
2	4
3	4
4	13
5	13
6	25
7	31
8	40
9	46
10	61
11	73
12	85
13	103
14	124
15	130
16	163
17	169
18	199
19	211
20	244
21	262
22	295
23	319
24	343
25	385
26	406
27	436
28	481
29	505
30	547
31	577
32	622
33	646
34	697
35	739
36	775
37	829
38	868
39	916
40	979
41	1015
42	1075
43	1111
44	1174
45	1204
46	1285
47	1333
48	1387
49	1453
50	1510
51	1558
52	1639

[1, 1, 4, 4, 13, 13, 25, 31, 40, 46, 61, 73, 85, 103, 124, 130, 163, 169, 199, 211, 244, 262, 295, 319, 343, 385, 406, 436, 481, 505, 547, 577, 622, 646, 697, 739, 775, 829, 868, 916, 979, 1015, 1075, 1111, 1174, 1204, 1285, 1333, 1387, 1453, 1510, 1558, 1639]

cp's OEIS Frontend

A127403 Number of points in a honeycomb net covered by a circular disk of diameter n if the center of the circle is chosen at a grid point.

Table of values

List of values