A199403 - cp's OEIS frontend

A199403 Binary XOR of (2^k - (-1)^k)/3 as k varies from 1 to n.

n	a(n)
1	1
2	0
3	3
4	6
5	13
6	24
7	51
8	102
9	205
10	408
11	819
12	1638
13	3277
14	6552
15	13107
16	26214
17	52429
18	104856
19	209715
20	419430
21	838861
22	1677720
23	3355443
24	6710886
25	13421773
26	26843544
27	53687091
28	107374182
29	214748365
30	429496728
31	858993459
32	1717986918
33	3435973837
34	6871947672
35	13743895347

[1, 0, 3, 6, 13, 24, 51, 102, 205, 408, 819, 1638, 3277, 6552, 13107, 26214, 52429, 104856, 209715, 419430, 838861, 1677720, 3355443, 6710886, 13421773, 26843544, 53687091, 107374182, 214748365, 429496728, 858993459, 1717986918, 3435973837, 6871947672, 13743895347]

cp's OEIS Frontend

A199403 Binary XOR of (2^k - (-1)^k)/3 as k varies from 1 to n.

Table of values

List of values