A140960 - cp's OEIS frontend

A140960 a(n) = (2(-1)^n - 2^(n+1) + 3n*2^n)/9.

n	a(n)
0	0
1	0
2	2
3	6
4	18
5	46
6	114
7	270
8	626
9	1422
10	3186
11	7054
12	15474
13	33678
14	72818
15	156558
16	334962
17	713614
18	1514610
19	3203982
20	6757490
21	14214030
22	29826162
23	62448526
24	130489458
25	272163726
26	566697074
27	1178133390
28	2445745266
29	5070447502
30	10498808946
31	21713445774
32	44858547314

[0, 0, 2, 6, 18, 46, 114, 270, 626, 1422, 3186, 7054, 15474, 33678, 72818, 156558, 334962, 713614, 1514610, 3203982, 6757490, 14214030, 29826162, 62448526, 130489458, 272163726, 566697074, 1178133390, 2445745266, 5070447502, 10498808946, 21713445774, 44858547314]

cp's OEIS Frontend

A140960 a(n) = (2(-1)^n - 2^(n+1) + 3n*2^n)/9.

Table of values

List of values

cp's OEIS Frontend

A140960 a(n) = (2*(-1)^n - 2^(n+1) + 3*n*2^n)/9.

Table of values

List of values

A140960 a(n) = (2(-1)^n - 2^(n+1) + 3n*2^n)/9.