A178987 - cp's OEIS frontend

A178987 a(n) = n(n-3)2^(n-2).

n	a(n)
0	0
1	-1
2	-2
3	0
4	16
5	80
6	288
7	896
8	2560
9	6912
10	17920
11	45056
12	110592
13	266240
14	630784
15	1474560
16	3407872
17	7798784
18	17694720
19	39845888
20	89128960
21	198180864
22	438304768
23	964689920
24	2113929216
25	4613734400
26	10032775168
27	21743271936
28	46976204800
29	101200166912

[0, -1, -2, 0, 16, 80, 288, 896, 2560, 6912, 17920, 45056, 110592, 266240, 630784, 1474560, 3407872, 7798784, 17694720, 39845888, 89128960, 198180864, 438304768, 964689920, 2113929216, 4613734400, 10032775168, 21743271936, 46976204800, 101200166912]

cp's OEIS Frontend

A178987 a(n) = n(n-3)2^(n-2).

Table of values

List of values

cp's OEIS Frontend

A178987 a(n) = n*(n-3)*2^(n-2).

Table of values

List of values

A178987 a(n) = n(n-3)2^(n-2).