A357576 - cp's OEIS frontend

A357576 Half area of the convex hull of {(x,y)| x,y integers and x^2 + y^2 < n^2}.

n	a(n)
1	0
2	2
3	8
4	17
5	28
6	46
7	63
8	87
9	112
10	142
11	173
12	204
13	244
14	287
15	333
16	378
17	428
18	485
19	540
20	602
21	661
22	737
23	802
24	869
25	947
26	1030
27	1118
28	1197
29	1278
30	1378
31	1469
32	1575
33	1670
34	1776
35	1889
36	1990
37	2108
38	2219
39	2353
40	2472
41	2587
42	2723
43	2854
44	3002
45	3135
46	3275
47	3424
48	3563
49	3721

[0, 2, 8, 17, 28, 46, 63, 87, 112, 142, 173, 204, 244, 287, 333, 378, 428, 485, 540, 602, 661, 737, 802, 869, 947, 1030, 1118, 1197, 1278, 1378, 1469, 1575, 1670, 1776, 1889, 1990, 2108, 2219, 2353, 2472, 2587, 2723, 2854, 3002, 3135, 3275, 3424, 3563, 3721]

cp's OEIS Frontend

A357576 Half area of the convex hull of {(x,y)| x,y integers and x^2 + y^2 < n^2}.

Table of values

List of values