A084188 - cp's OEIS frontend

A084188 a(0)=1, a(n+1) = 2*a(n) + b(n+2), where b(n)=A004539(n) is the n-th bit in the binary expansion of sqrt(2).

n	a(n)
0	1
1	2
2	5
3	11
4	22
5	45
6	90
7	181
8	362
9	724
10	1448
11	2896
12	5792
13	11585
14	23170
15	46340
16	92681
17	185363
18	370727
19	741455
20	1482910
21	2965820
22	5931641
23	11863283
24	23726566
25	47453132
26	94906265
27	189812531
28	379625062
29	759250124

[1, 2, 5, 11, 22, 45, 90, 181, 362, 724, 1448, 2896, 5792, 11585, 23170, 46340, 92681, 185363, 370727, 741455, 1482910, 2965820, 5931641, 11863283, 23726566, 47453132, 94906265, 189812531, 379625062, 759250124]

cp's OEIS Frontend

A084188 a(0)=1, a(n+1) = 2*a(n) + b(n+2), where b(n)=A004539(n) is the n-th bit in the binary expansion of sqrt(2).

Table of values

List of values