A006582 - cp's OEIS frontend

A006582 a(n) = Sum_{k=1..n-1} k XOR n-k.

n	a(n)
2	0
3	6
4	4
5	12
6	20
7	42
8	32
9	40
10	48
11	78
12	84
13	116
14	148
15	210
16	176
17	176
18	176
19	214
20	212
21	252
22	292
23	378
24	368
25	408
26	448
27	542
28	580
29	676
30	772
31	930
32	832
33	800
34	768
35	806
36	772
37	812
38	852
39	970
40	928
41	968
42	1008
43	1134
44	1172
45	1300
46	1428
47	1650
48	1584
49	1616
50	1648
51	1782
52	1812
53	1948

[0, 6, 4, 12, 20, 42, 32, 40, 48, 78, 84, 116, 148, 210, 176, 176, 176, 214, 212, 252, 292, 378, 368, 408, 448, 542, 580, 676, 772, 930, 832, 800, 768, 806, 772, 812, 852, 970, 928, 968, 1008, 1134, 1172, 1300, 1428, 1650, 1584, 1616, 1648, 1782, 1812, 1948]

cp's OEIS Frontend

A006582 a(n) = Sum_{k=1..n-1} k XOR n-k.

Table of values

List of values