A175828 - cp's OEIS frontend

A175828 a(n) = (n(6n+1)+(n+2)*(-1)^n)/2.

n	a(n)
0	1
1	2
2	15
3	26
4	53
5	74
6	115
7	146
8	201
9	242
10	311
11	362
12	445
13	506
14	603
15	674
16	785
17	866
18	991
19	1082
20	1221
21	1322
22	1475
23	1586
24	1753
25	1874
26	2055
27	2186
28	2381
29	2522
30	2731
31	2882
32	3105
33	3266
34	3503
35	3674
36	3925
37	4106
38	4371
39	4562
40	4841
41	5042
42	5335
43	5546
44	5853
45	6074

[1, 2, 15, 26, 53, 74, 115, 146, 201, 242, 311, 362, 445, 506, 603, 674, 785, 866, 991, 1082, 1221, 1322, 1475, 1586, 1753, 1874, 2055, 2186, 2381, 2522, 2731, 2882, 3105, 3266, 3503, 3674, 3925, 4106, 4371, 4562, 4841, 5042, 5335, 5546, 5853, 6074]

cp's OEIS Frontend

A175828 a(n) = (n(6n+1)+(n+2)*(-1)^n)/2.

Table of values

List of values

cp's OEIS Frontend

A175828 a(n) = (n*(6*n+1)+(n+2)*(-1)^n)/2.

Table of values

List of values

A175828 a(n) = (n(6n+1)+(n+2)*(-1)^n)/2.