A286264 - cp's OEIS frontend

A286264 a(n) = 2*(ceiling((n^2)/2)+1) - 1.

n	a(n)
1	3
2	5
3	11
4	17
5	27
6	37
7	51
8	65
9	83
10	101
11	123
12	145
13	171
14	197
15	227
16	257
17	291
18	325
19	363
20	401
21	443
22	485
23	531
24	577
25	627
26	677
27	731
28	785
29	843
30	901
31	963
32	1025
33	1091
34	1157
35	1227
36	1297
37	1371
38	1445
39	1523
40	1601
41	1683
42	1765
43	1851
44	1937
45	2027
46	2117
47	2211
48	2305
49	2403
50	2501

[3, 5, 11, 17, 27, 37, 51, 65, 83, 101, 123, 145, 171, 197, 227, 257, 291, 325, 363, 401, 443, 485, 531, 577, 627, 677, 731, 785, 843, 901, 963, 1025, 1091, 1157, 1227, 1297, 1371, 1445, 1523, 1601, 1683, 1765, 1851, 1937, 2027, 2117, 2211, 2305, 2403, 2501]

cp's OEIS Frontend

A286264 a(n) = 2*(ceiling((n^2)/2)+1) - 1.

Table of values

List of values