A000036 - cp's OEIS frontend

A000036 Let A(n) = #{(i,j): i^2 + j^2 <= n}, V(n) = Pi*n, P(n) = A(n) - V(n); A000099 gives values of n where |P(n)| sets a new record; sequence gives closest integer to P(A000099(n)).

n	a(n)
1	2
2	3
3	5
4	6
5	6
6	-6
7	7
8	8
9	10
10	13
11	13
12	13
13	14
14	-17
15	17
16	17
17	18
18	-19
19	20
20	-22
21	23
22	27
23	-29
24	-29
25	29
26	-31
27	-32
28	-35
29	36
30	-37
31	-40
32	-43
33	-46
34	-48
35	-50
36	-53
37	-55
38	-57
39	-60
40	-60
41	-61
42	-63
43	-66
44	-66
45	-68
46	-71
47	-74
48	-77
49	-79
50	-82
51	-85
52	-88
53	-89
54	-92
55	-95
56	-96
57	-97
58	-97
59	-100

[2, 3, 5, 6, 6, -6, 7, 8, 10, 13, 13, 13, 14, -17, 17, 17, 18, -19, 20, -22, 23, 27, -29, -29, 29, -31, -32, -35, 36, -37, -40, -43, -46, -48, -50, -53, -55, -57, -60, -60, -61, -63, -66, -66, -68, -71, -74, -77, -79, -82, -85, -88, -89, -92, -95, -96, -97, -97, -100]

cp's OEIS Frontend

A000036 Let A(n) = #{(i,j): i^2 + j^2 <= n}, V(n) = Pi*n, P(n) = A(n) - V(n); A000099 gives values of n where |P(n)| sets a new record; sequence gives closest integer to P(A000099(n)).

Table of values

List of values