A104584 - cp's OEIS frontend

A104584 a(n) = (1/2) * ( 3n^2 + n(-1)^n ).

n	a(n)
0	0
1	1
2	7
3	12
4	26
5	35
6	57
7	70
8	100
9	117
10	155
11	176
12	222
13	247
14	301
15	330
16	392
17	425
18	495
19	532
20	610
21	651
22	737
23	782
24	876
25	925
26	1027
27	1080
28	1190
29	1247
30	1365
31	1426
32	1552
33	1617
34	1751
35	1820
36	1962
37	2035
38	2185
39	2262
40	2420

[0, 1, 7, 12, 26, 35, 57, 70, 100, 117, 155, 176, 222, 247, 301, 330, 392, 425, 495, 532, 610, 651, 737, 782, 876, 925, 1027, 1080, 1190, 1247, 1365, 1426, 1552, 1617, 1751, 1820, 1962, 2035, 2185, 2262, 2420]

cp's OEIS Frontend

A104584 a(n) = (1/2) * ( 3n^2 + n(-1)^n ).

Table of values

List of values

cp's OEIS Frontend

A104584 a(n) = (1/2) * ( 3*n^2 + n*(-1)^n ).

Table of values

List of values

A104584 a(n) = (1/2) * ( 3n^2 + n(-1)^n ).