A170881 - cp's OEIS frontend

A170881 a(0)=0; thereafter a(n) = (3n+1)2^(n-2)+1.

n	a(n)
0	0
1	1
2	3
3	8
4	21
5	53
6	129
7	305
8	705
9	1601
10	3585
11	7937
12	17409
13	37889
14	81921
15	176129
16	376833
17	802817
18	1703937
19	3604481
20	7602177
21	15990785
22	33554433
23	70254593
24	146800641
25	306184193
26	637534209
27	1325400065
28	2751463425
29	5704253441
30	11811160065
31	24427626497
32	50465865729

[0, 1, 3, 8, 21, 53, 129, 305, 705, 1601, 3585, 7937, 17409, 37889, 81921, 176129, 376833, 802817, 1703937, 3604481, 7602177, 15990785, 33554433, 70254593, 146800641, 306184193, 637534209, 1325400065, 2751463425, 5704253441, 11811160065, 24427626497, 50465865729]

cp's OEIS Frontend

A170881 a(0)=0; thereafter a(n) = (3n+1)2^(n-2)+1.

Table of values

List of values

cp's OEIS Frontend

A170881 a(0)=0; thereafter a(n) = (3*n+1)*2^(n-2)+1.

Table of values

List of values

A170881 a(0)=0; thereafter a(n) = (3n+1)2^(n-2)+1.