A338502 - cp's OEIS frontend

A338502 Lexicographically earliest sequence of distinct nonnegative integers such that for any n > 0, a(1) XOR ... XOR a(n) is a square (where XOR denotes the bitwise XOR operator).

n	a(n)
1	0
2	1
3	5
4	4
5	9
6	8
7	17
8	16
9	25
10	24
11	37
12	21
13	33
14	20
15	13
16	45
17	32
18	29
19	40
20	48
21	65
22	36
23	53
24	72
25	61
26	52
27	80
28	57
29	93
30	64
31	85
32	49
33	81
34	88
35	56
36	96
37	117
38	100
39	68
40	125
41	105
42	116
43	101
44	120
45	112
46	73
47	89
48	137
49	84
50	109
51	141
52	180
53	113
54	133
55	160
56	132
57	161
58	152
59	121
60	144
61	128

[0, 1, 5, 4, 9, 8, 17, 16, 25, 24, 37, 21, 33, 20, 13, 45, 32, 29, 40, 48, 65, 36, 53, 72, 61, 52, 80, 57, 93, 64, 85, 49, 81, 88, 56, 96, 117, 100, 68, 125, 105, 116, 101, 120, 112, 73, 89, 137, 84, 109, 141, 180, 113, 133, 160, 132, 161, 152, 121, 144, 128]

cp's OEIS Frontend

A338502 Lexicographically earliest sequence of distinct nonnegative integers such that for any n > 0, a(1) XOR ... XOR a(n) is a square (where XOR denotes the bitwise XOR operator).

Table of values

List of values

n	a(n)
1	0
2	1
3	5
4	4
5	9
6	8
7	17
8	16
9	25
10	24
11	37
12	21
13	33
14	20
15	13
16	45
17	32
18	29
19	40
20	48
21	65
22	36
23	53
24	72
25	61
26	52
27	80
28	57
29	93
30	64
31	85
32	49
33	81
34	88
35	56
36	96
37	117
38	100
39	68
40	125
41	105
42	116
43	101
44	120
45	112
46	73
47	89
48	137
49	84
50	109
51	141
52	180
53	113
54	133
55	160
56	132
57	161
58	152
59	121
60	144
61	128

n	a(n)
1	0
2	1
3	5
4	4
5	9
6	8
7	17
8	16
9	25
10	24
11	37
12	21
13	33
14	20
15	13
16	45
17	32
18	29
19	40
20	48
21	65
22	36
23	53
24	72
25	61
26	52
27	80
28	57
29	93
30	64
31	85
32	49
33	81
34	88
35	56
36	96
37	117
38	100
39	68
40	125
41	105
42	116
43	101
44	120
45	112
46	73
47	89
48	137
49	84
50	109
51	141
52	180
53	113
54	133
55	160
56	132
57	161
58	152
59	121
60	144
61	128

n	a(n)
1	0
2	1
3	5
4	4
5	9
6	8
7	17
8	16
9	25
10	24
11	37
12	21
13	33
14	20
15	13
16	45
17	32
18	29
19	40
20	48
21	65
22	36
23	53
24	72
25	61
26	52
27	80
28	57
29	93
30	64
31	85
32	49
33	81
34	88
35	56
36	96
37	117
38	100
39	68
40	125
41	105
42	116
43	101
44	120
45	112
46	73
47	89
48	137
49	84
50	109
51	141
52	180
53	113
54	133
55	160
56	132
57	161
58	152
59	121
60	144
61	128