A080241 - cp's OEIS frontend

A080241 Define two sequences by A_n = mex{A_i,B_i : 0 <= i < n} for n >= 0, B_0=0, B_1=1 and for n >= 2, B_n = 2B_{n-1}+(-1)^{A_n}. Sequence gives B_n.

n	a(n)
0	0
1	1
2	3
3	7
4	13
5	27
6	55
7	109
8	219
9	437
10	875
11	1751
12	3501
13	7003
14	14005
15	28011
16	56021
17	112043
18	224085
19	448171
20	896341
21	1792683
22	3585365
23	7170731
24	14341463
25	28682925
26	57365851
27	114731701
28	229463403
29	458926805
30	917853611
31	1835707221

[0, 1, 3, 7, 13, 27, 55, 109, 219, 437, 875, 1751, 3501, 7003, 14005, 28011, 56021, 112043, 224085, 448171, 896341, 1792683, 3585365, 7170731, 14341463, 28682925, 57365851, 114731701, 229463403, 458926805, 917853611, 1835707221]

cp's OEIS Frontend

A080241 Define two sequences by A_n = mex{A_i,B_i : 0 <= i < n} for n >= 0, B_0=0, B_1=1 and for n >= 2, B_n = 2B_{n-1}+(-1)^{A_n}. Sequence gives B_n.

Table of values

List of values