A331952 - cp's OEIS frontend

A331952 a(n) = (-7 + (-1)^(1+n) + 6*n^2) / 8.

n	a(n)
0	-1
1	0
2	2
3	6
4	11
5	18
6	26
7	36
8	47
9	60
10	74
11	90
12	107
13	126
14	146
15	168
16	191
17	216
18	242
19	270
20	299
21	330
22	362
23	396
24	431
25	468
26	506
27	546
28	587
29	630
30	674
31	720
32	767
33	816
34	866
35	918
36	971
37	1026
38	1082
39	1140
40	1199
41	1260
42	1322
43	1386
44	1451
45	1518
46	1586
47	1656
48	1727
49	1800
50	1874
51	1950
52	2027

[-1, 0, 2, 6, 11, 18, 26, 36, 47, 60, 74, 90, 107, 126, 146, 168, 191, 216, 242, 270, 299, 330, 362, 396, 431, 468, 506, 546, 587, 630, 674, 720, 767, 816, 866, 918, 971, 1026, 1082, 1140, 1199, 1260, 1322, 1386, 1451, 1518, 1586, 1656, 1727, 1800, 1874, 1950, 2027]

cp's OEIS Frontend

A331952 a(n) = (-7 + (-1)^(1+n) + 6*n^2) / 8.

Table of values

List of values