A232228 - cp's OEIS frontend

A232228 a(1)=1; thereafter a(n) = 2^(number of bits in binary expansion of a(n-1)) + 1 + a(n-1).

n	a(n)
1	1
2	4
3	13
4	30
5	63
6	128
7	385
8	898
9	1923
10	3972
11	8069
12	16262
13	32647
14	65416
15	130953
16	262026
17	524171
18	1048460
19	2097037
20	4194190
21	8388495
22	16777104
23	33554321
24	67108754
25	134217619
26	268435348
27	536870805
28	1073741718
29	2147483543
30	4294967192
31	8589934489
32	17179869082
33	34359738267
34	68719476636

[1, 4, 13, 30, 63, 128, 385, 898, 1923, 3972, 8069, 16262, 32647, 65416, 130953, 262026, 524171, 1048460, 2097037, 4194190, 8388495, 16777104, 33554321, 67108754, 134217619, 268435348, 536870805, 1073741718, 2147483543, 4294967192, 8589934489, 17179869082, 34359738267, 68719476636]

cp's OEIS Frontend

A232228 a(1)=1; thereafter a(n) = 2^(number of bits in binary expansion of a(n-1)) + 1 + a(n-1).

Table of values

List of values