A255876 - cp's OEIS frontend

A255876 a(n) = (4n^2 + 4n - 3 - 3*(-1)^n)/2.

n	a(n)
1	4
2	9
3	24
4	37
5	60
6	81
7	112
8	141
9	180
10	217
11	264
12	309
13	364
14	417
15	480
16	541
17	612
18	681
19	760
20	837
21	924
22	1009
23	1104
24	1197
25	1300
26	1401
27	1512
28	1621
29	1740
30	1857
31	1984
32	2109
33	2244
34	2377
35	2520
36	2661
37	2812
38	2961
39	3120
40	3277
41	3444
42	3609
43	3784
44	3957
45	4140
46	4321
47	4512
48	4701

[4, 9, 24, 37, 60, 81, 112, 141, 180, 217, 264, 309, 364, 417, 480, 541, 612, 681, 760, 837, 924, 1009, 1104, 1197, 1300, 1401, 1512, 1621, 1740, 1857, 1984, 2109, 2244, 2377, 2520, 2661, 2812, 2961, 3120, 3277, 3444, 3609, 3784, 3957, 4140, 4321, 4512, 4701]

cp's OEIS Frontend

A255876 a(n) = (4n^2 + 4n - 3 - 3*(-1)^n)/2.

Table of values

List of values

cp's OEIS Frontend

A255876 a(n) = (4*n^2 + 4*n - 3 - 3*(-1)^n)/2.

Table of values

List of values

A255876 a(n) = (4n^2 + 4n - 3 - 3*(-1)^n)/2.