A372237 - cp's OEIS frontend

A372237 a(0) = 4; to obtain a(k), write out the base-(2^k) expansion of a(k-1), bump to base 2^(k+1), then subtract 1.

n	a(n)
0	4
1	15
2	26
3	49
4	96
5	191
6	318
7	573
8	1084
9	2107
10	4154
11	8249
12	16440
13	32823
14	65590
15	131125
16	262196
17	524339
18	1048626
19	2097201
20	4194352
21	8388655
22	16777262
23	33554477
24	67108908
25	134217771
26	268435498
27	536870953
28	1073741864
29	2147483687
30	4294967334
31	8589934629
32	17179869220

[4, 15, 26, 49, 96, 191, 318, 573, 1084, 2107, 4154, 8249, 16440, 32823, 65590, 131125, 262196, 524339, 1048626, 2097201, 4194352, 8388655, 16777262, 33554477, 67108908, 134217771, 268435498, 536870953, 1073741864, 2147483687, 4294967334, 8589934629, 17179869220]

cp's OEIS Frontend

A372237 a(0) = 4; to obtain a(k), write out the base-(2^k) expansion of a(k-1), bump to base 2^(k+1), then subtract 1.

Table of values

List of values