A269112 - cp's OEIS frontend

A269112 a(n) = (3(n-1)n + (-1)^((n-1)*n/2) + 5)/2.

n	a(n)
1	3
2	5
3	11
4	21
5	33
6	47
7	65
8	87
9	111
10	137
11	167
12	201
13	237
14	275
15	317
16	363
17	411
18	461
19	515
20	573
21	633
22	695
23	761
24	831
25	903
26	977
27	1055
28	1137
29	1221
30	1307
31	1397
32	1491
33	1587
34	1685
35	1787
36	1893
37	2001
38	2111
39	2225
40	2343
41	2463
42	2585
43	2711
44	2841
45	2973
46	3107
47	3245
48	3387
49	3531
50	3677
51	3827

[3, 5, 11, 21, 33, 47, 65, 87, 111, 137, 167, 201, 237, 275, 317, 363, 411, 461, 515, 573, 633, 695, 761, 831, 903, 977, 1055, 1137, 1221, 1307, 1397, 1491, 1587, 1685, 1787, 1893, 2001, 2111, 2225, 2343, 2463, 2585, 2711, 2841, 2973, 3107, 3245, 3387, 3531, 3677, 3827]

cp's OEIS Frontend

A269112 a(n) = (3(n-1)n + (-1)^((n-1)*n/2) + 5)/2.

Table of values

List of values

cp's OEIS Frontend

A269112 a(n) = (3*(n-1)*n + (-1)^((n-1)*n/2) + 5)/2.

Table of values

List of values

A269112 a(n) = (3(n-1)n + (-1)^((n-1)*n/2) + 5)/2.