A248800 - cp's OEIS frontend

A248800 a(n) = (2*n^2 + 3 + (-1)^n)/2.

n	a(n)
0	2
1	2
2	6
3	10
4	18
5	26
6	38
7	50
8	66
9	82
10	102
11	122
12	146
13	170
14	198
15	226
16	258
17	290
18	326
19	362
20	402
21	442
22	486
23	530
24	578
25	626
26	678
27	730
28	786
29	842
30	902
31	962
32	1026
33	1090
34	1158
35	1226
36	1298
37	1370
38	1446
39	1522
40	1602
41	1682
42	1766
43	1850
44	1938
45	2026
46	2118

[2, 2, 6, 10, 18, 26, 38, 50, 66, 82, 102, 122, 146, 170, 198, 226, 258, 290, 326, 362, 402, 442, 486, 530, 578, 626, 678, 730, 786, 842, 902, 962, 1026, 1090, 1158, 1226, 1298, 1370, 1446, 1522, 1602, 1682, 1766, 1850, 1938, 2026, 2118]

cp's OEIS Frontend

A248800 a(n) = (2*n^2 + 3 + (-1)^n)/2.

Table of values

List of values