A038377 - cp's OEIS frontend

A038377 Number of odd nonprimes <= (2n+1)^2.

n	a(n)
0	1
1	2
2	5
3	11
4	20
5	32
6	47
7	66
8	85
9	110
10	137
11	167
12	200
13	237
14	276
15	320
16	365
17	414
18	467
19	522
20	579
21	643
22	708
23	777
24	845
25	924
26	997
27	1080
28	1169
29	1255
30	1343
31	1437
32	1536
33	1637
34	1741
35	1847
36	1961
37	2075
38	2187
39	2311
40	2435
41	2560
42	2691
43	2826
44	2962
45	3104
46	3249
47	3393
48	3543

[1, 2, 5, 11, 20, 32, 47, 66, 85, 110, 137, 167, 200, 237, 276, 320, 365, 414, 467, 522, 579, 643, 708, 777, 845, 924, 997, 1080, 1169, 1255, 1343, 1437, 1536, 1637, 1741, 1847, 1961, 2075, 2187, 2311, 2435, 2560, 2691, 2826, 2962, 3104, 3249, 3393, 3543]

cp's OEIS Frontend

A038377 Number of odd nonprimes <= (2n+1)^2.

Table of values

List of values