A169811 - cp's OEIS frontend

A169811 a(n) = n XOR n*(n+1)/2.

n	a(n)
0	0
1	0
2	1
3	5
4	14
5	10
6	19
7	27
8	44
9	36
10	61
11	73
12	66
13	86
14	103
15	119
16	152
17	136
18	185
19	173
20	198
21	242
22	235
23	259
24	308
25	348
26	325
27	353
28	394
29	430
30	463
31	495
32	560
33	528
34	625
35	597
36	702
37	666
38	707
39	811
40	796
41	884
42	941
43	921
44	1010
45	1062
46	1047
47	1095
48	1192
49	1272
50	1225
51	1309
52	1366
53	1442
54	1531

[0, 0, 1, 5, 14, 10, 19, 27, 44, 36, 61, 73, 66, 86, 103, 119, 152, 136, 185, 173, 198, 242, 235, 259, 308, 348, 325, 353, 394, 430, 463, 495, 560, 528, 625, 597, 702, 666, 707, 811, 796, 884, 941, 921, 1010, 1062, 1047, 1095, 1192, 1272, 1225, 1309, 1366, 1442, 1531]

cp's OEIS Frontend

A169811 a(n) = n XOR n*(n+1)/2.

Table of values

List of values