A075427 - cp's OEIS frontend

A075427 a(0) = 1; a(n) = a(n-1)+1 if n is even, otherwise a(n) = 2*a(n-1).

n	a(n)
0	1
1	2
2	3
3	6
4	7
5	14
6	15
7	30
8	31
9	62
10	63
11	126
12	127
13	254
14	255
15	510
16	511
17	1022
18	1023
19	2046
20	2047
21	4094
22	4095
23	8190
24	8191
25	16382
26	16383
27	32766
28	32767
29	65534
30	65535
31	131070
32	131071
33	262142
34	262143
35	524286
36	524287
37	1048574
38	1048575
39	2097150
40	2097151
41	4194302
42	4194303
43	8388606

[1, 2, 3, 6, 7, 14, 15, 30, 31, 62, 63, 126, 127, 254, 255, 510, 511, 1022, 1023, 2046, 2047, 4094, 4095, 8190, 8191, 16382, 16383, 32766, 32767, 65534, 65535, 131070, 131071, 262142, 262143, 524286, 524287, 1048574, 1048575, 2097150, 2097151, 4194302, 4194303, 8388606]

cp's OEIS Frontend

A075427 a(0) = 1; a(n) = a(n-1)+1 if n is even, otherwise a(n) = 2*a(n-1).

Table of values

List of values