A373662 - cp's OEIS frontend

A373662 a(n) = (1 + (n+1)^2 - (n-2)*(-1)^n)/2.

n	a(n)
1	2
2	5
3	9
4	12
5	20
6	23
7	35
8	38
9	54
10	57
11	77
12	80
13	104
14	107
15	135
16	138
17	170
18	173
19	209
20	212
21	252
22	255
23	299
24	302
25	350
26	353
27	405
28	408
29	464
30	467
31	527
32	530
33	594
34	597
35	665
36	668
37	740
38	743
39	819
40	822
41	902
42	905
43	989
44	992
45	1080
46	1083
47	1175
48	1178
49	1274
50	1277
51	1377
52	1380
53	1484
54	1487
55	1595

[2, 5, 9, 12, 20, 23, 35, 38, 54, 57, 77, 80, 104, 107, 135, 138, 170, 173, 209, 212, 252, 255, 299, 302, 350, 353, 405, 408, 464, 467, 527, 530, 594, 597, 665, 668, 740, 743, 819, 822, 902, 905, 989, 992, 1080, 1083, 1175, 1178, 1274, 1277, 1377, 1380, 1484, 1487, 1595]

cp's OEIS Frontend

A373662 a(n) = (1 + (n+1)^2 - (n-2)*(-1)^n)/2.

Table of values

List of values