A173247 - cp's OEIS frontend

A173247 a(0) = -1 and a(n) = (-1)^n(n - 4 - 3n^2)/2 for n >= 1.

n	a(n)
0	-1
1	3
2	-7
3	14
4	-24
5	37
6	-53
7	72
8	-94
9	119
10	-147
11	178
12	-212
13	249
14	-289
15	332
16	-378
17	427
18	-479
19	534
20	-592
21	653
22	-717
23	784
24	-854
25	927
26	-1003
27	1082
28	-1164
29	1249
30	-1337
31	1428
32	-1522
33	1619
34	-1719
35	1822
36	-1928
37	2037
38	-2149
39	2264
40	-2382
41	2503
42	-2627
43	2754

[-1, 3, -7, 14, -24, 37, -53, 72, -94, 119, -147, 178, -212, 249, -289, 332, -378, 427, -479, 534, -592, 653, -717, 784, -854, 927, -1003, 1082, -1164, 1249, -1337, 1428, -1522, 1619, -1719, 1822, -1928, 2037, -2149, 2264, -2382, 2503, -2627, 2754]

cp's OEIS Frontend

A173247 a(0) = -1 and a(n) = (-1)^n(n - 4 - 3n^2)/2 for n >= 1.

Table of values

List of values

cp's OEIS Frontend

A173247 a(0) = -1 and a(n) = (-1)^n*(n - 4 - 3*n^2)/2 for n >= 1.

Table of values

List of values

A173247 a(0) = -1 and a(n) = (-1)^n(n - 4 - 3n^2)/2 for n >= 1.