A045883 - cp's OEIS frontend

A045883 a(n) = ((3n+1)2^n - (-1)^n)/9.

n	a(n)
0	0
1	1
2	3
3	9
4	23
5	57
6	135
7	313
8	711
9	1593
10	3527
11	7737
12	16839
13	36409
14	78279
15	167481
16	356807
17	757305
18	1601991
19	3378745
20	7107015
21	14913081
22	31224263
23	65244729
24	136081863
25	283348537
26	589066695
27	1222872633
28	2535223751
29	5249404473
30	10856722887
31	22429273657
32	46290203079

[0, 1, 3, 9, 23, 57, 135, 313, 711, 1593, 3527, 7737, 16839, 36409, 78279, 167481, 356807, 757305, 1601991, 3378745, 7107015, 14913081, 31224263, 65244729, 136081863, 283348537, 589066695, 1222872633, 2535223751, 5249404473, 10856722887, 22429273657, 46290203079]

cp's OEIS Frontend

A045883 a(n) = ((3n+1)2^n - (-1)^n)/9.

Table of values

List of values

cp's OEIS Frontend

A045883 a(n) = ((3*n+1)*2^n - (-1)^n)/9.

Table of values

List of values

A045883 a(n) = ((3n+1)2^n - (-1)^n)/9.