A283618 - cp's OEIS frontend

A283618 A 2D -> 1D binary encoding of points (x,y) of the square lattice such that x >= 0 and 0 <= y <= x, and ranked in order of increasing distance from the origin. Equidistant points are ranked in order of increasing ordinate.

n	a(n)
1	0
2	2
3	3
4	8
5	9
6	12
7	10
8	11
9	14
10	32
11	33
12	15
13	36
14	34
15	37
16	35
17	38
18	48
19	39
20	40
21	41
22	44
23	50
24	45
25	42
26	43
27	51
28	56
29	46
30	47
31	57
32	128
33	129
34	58
35	132
36	60
37	133
38	59
39	144
40	130
41	131
42	134
43	62
44	145
45	135
46	146
47	63
48	136
49	148
50	137
51	140
52	147
53	141
54	149
55	152
56	150
57	138
58	139
59	142
60	153
61	192
62	143
63	151
64	156
65	154
66	160
67	161
68	194
69	155
70	164
71	157
72	165

[0, 2, 3, 8, 9, 12, 10, 11, 14, 32, 33, 15, 36, 34, 37, 35, 38, 48, 39, 40, 41, 44, 50, 45, 42, 43, 51, 56, 46, 47, 57, 128, 129, 58, 132, 60, 133, 59, 144, 130, 131, 134, 62, 145, 135, 146, 63, 136, 148, 137, 140, 147, 141, 149, 152, 150, 138, 139, 142, 153, 192, 143, 151, 156, 154, 160, 161, 194, 155, 164, 157, 165]

cp's OEIS Frontend

A283618 A 2D -> 1D binary encoding of points (x,y) of the square lattice such that x >= 0 and 0 <= y <= x, and ranked in order of increasing distance from the origin. Equidistant points are ranked in order of increasing ordinate.

Table of values

List of values

n	a(n)
1	0
2	2
3	3
4	8
5	9
6	12
7	10
8	11
9	14
10	32
11	33
12	15
13	36
14	34
15	37
16	35
17	38
18	48
19	39
20	40
21	41
22	44
23	50
24	45
25	42
26	43
27	51
28	56
29	46
30	47
31	57
32	128
33	129
34	58
35	132
36	60
37	133
38	59
39	144
40	130
41	131
42	134
43	62
44	145
45	135
46	146
47	63
48	136
49	148
50	137
51	140
52	147
53	141
54	149
55	152
56	150
57	138
58	139
59	142
60	153
61	192
62	143
63	151
64	156
65	154
66	160
67	161
68	194
69	155
70	164
71	157
72	165

n	a(n)
1	0
2	2
3	3
4	8
5	9
6	12
7	10
8	11
9	14
10	32
11	33
12	15
13	36
14	34
15	37
16	35
17	38
18	48
19	39
20	40
21	41
22	44
23	50
24	45
25	42
26	43
27	51
28	56
29	46
30	47
31	57
32	128
33	129
34	58
35	132
36	60
37	133
38	59
39	144
40	130
41	131
42	134
43	62
44	145
45	135
46	146
47	63
48	136
49	148
50	137
51	140
52	147
53	141
54	149
55	152
56	150
57	138
58	139
59	142
60	153
61	192
62	143
63	151
64	156
65	154
66	160
67	161
68	194
69	155
70	164
71	157
72	165

n	a(n)
1	0
2	2
3	3
4	8
5	9
6	12
7	10
8	11
9	14
10	32
11	33
12	15
13	36
14	34
15	37
16	35
17	38
18	48
19	39
20	40
21	41
22	44
23	50
24	45
25	42
26	43
27	51
28	56
29	46
30	47
31	57
32	128
33	129
34	58
35	132
36	60
37	133
38	59
39	144
40	130
41	131
42	134
43	62
44	145
45	135
46	146
47	63
48	136
49	148
50	137
51	140
52	147
53	141
54	149
55	152
56	150
57	138
58	139
59	142
60	153
61	192
62	143
63	151
64	156
65	154
66	160
67	161
68	194
69	155
70	164
71	157
72	165