A104585 - cp's OEIS frontend

A104585 a(n) = (1/2) * ( 3n^2 - n(-1)^n ).

n	a(n)
0	0
1	2
2	5
3	15
4	22
5	40
6	51
7	77
8	92
9	126
10	145
11	187
12	210
13	260
14	287
15	345
16	376
17	442
18	477
19	551
20	590
21	672
22	715
23	805
24	852
25	950
26	1001
27	1107
28	1162
29	1276
30	1335
31	1457
32	1520
33	1650
34	1717
35	1855
36	1926
37	2072
38	2147
39	2301
40	2380
41	2542
42	2625
43	2795
44	2882
45	3060
46	3151
47	3337
48	3432
49	3626

[0, 2, 5, 15, 22, 40, 51, 77, 92, 126, 145, 187, 210, 260, 287, 345, 376, 442, 477, 551, 590, 672, 715, 805, 852, 950, 1001, 1107, 1162, 1276, 1335, 1457, 1520, 1650, 1717, 1855, 1926, 2072, 2147, 2301, 2380, 2542, 2625, 2795, 2882, 3060, 3151, 3337, 3432, 3626]

cp's OEIS Frontend

A104585 a(n) = (1/2) * ( 3n^2 - n(-1)^n ).

Table of values

List of values

cp's OEIS Frontend

A104585 a(n) = (1/2) * ( 3*n^2 - n*(-1)^n ).

Table of values

List of values

A104585 a(n) = (1/2) * ( 3n^2 - n(-1)^n ).