A354372 - cp's OEIS frontend

A354372 Square spiral on a 2D square lattice, one term per cell, starting at the origin with 0; the digits of the four integers forming any 2 X 2 square add up to a square.

n	a(n)
1	0
2	1
3	2
4	6
5	3
6	7
7	4
8	5
9	12
10	8
11	13
12	9
13	10
14	22
15	31
16	21
17	11
18	17
19	16
20	25
21	14
22	18
23	34
24	19
25	40
26	15
27	43
28	24
29	33
30	27
31	20
32	49
33	52
34	28
35	26
36	30
37	23
38	42
39	36
40	39
41	37
42	59
43	29
44	51
45	32
46	69
47	89
48	41
49	46
50	35
51	48
52	38
53	57
54	66
55	45
56	50
57	44
58	55
59	47
60	99
61	68
62	98
63	53
64	54
65	56
66	65
67	77
68	61
69	62
70	60
71	105
72	104
73	58
74	70
75	75
76	67
77	79

[0, 1, 2, 6, 3, 7, 4, 5, 12, 8, 13, 9, 10, 22, 31, 21, 11, 17, 16, 25, 14, 18, 34, 19, 40, 15, 43, 24, 33, 27, 20, 49, 52, 28, 26, 30, 23, 42, 36, 39, 37, 59, 29, 51, 32, 69, 89, 41, 46, 35, 48, 38, 57, 66, 45, 50, 44, 55, 47, 99, 68, 98, 53, 54, 56, 65, 77, 61, 62, 60, 105, 104, 58, 70, 75, 67, 79]

cp's OEIS Frontend

A354372 Square spiral on a 2D square lattice, one term per cell, starting at the origin with 0; the digits of the four integers forming any 2 X 2 square add up to a square.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	6
5	3
6	7
7	4
8	5
9	12
10	8
11	13
12	9
13	10
14	22
15	31
16	21
17	11
18	17
19	16
20	25
21	14
22	18
23	34
24	19
25	40
26	15
27	43
28	24
29	33
30	27
31	20
32	49
33	52
34	28
35	26
36	30
37	23
38	42
39	36
40	39
41	37
42	59
43	29
44	51
45	32
46	69
47	89
48	41
49	46
50	35
51	48
52	38
53	57
54	66
55	45
56	50
57	44
58	55
59	47
60	99
61	68
62	98
63	53
64	54
65	56
66	65
67	77
68	61
69	62
70	60
71	105
72	104
73	58
74	70
75	75
76	67
77	79

n	a(n)
1	0
2	1
3	2
4	6
5	3
6	7
7	4
8	5
9	12
10	8
11	13
12	9
13	10
14	22
15	31
16	21
17	11
18	17
19	16
20	25
21	14
22	18
23	34
24	19
25	40
26	15
27	43
28	24
29	33
30	27
31	20
32	49
33	52
34	28
35	26
36	30
37	23
38	42
39	36
40	39
41	37
42	59
43	29
44	51
45	32
46	69
47	89
48	41
49	46
50	35
51	48
52	38
53	57
54	66
55	45
56	50
57	44
58	55
59	47
60	99
61	68
62	98
63	53
64	54
65	56
66	65
67	77
68	61
69	62
70	60
71	105
72	104
73	58
74	70
75	75
76	67
77	79

n	a(n)
1	0
2	1
3	2
4	6
5	3
6	7
7	4
8	5
9	12
10	8
11	13
12	9
13	10
14	22
15	31
16	21
17	11
18	17
19	16
20	25
21	14
22	18
23	34
24	19
25	40
26	15
27	43
28	24
29	33
30	27
31	20
32	49
33	52
34	28
35	26
36	30
37	23
38	42
39	36
40	39
41	37
42	59
43	29
44	51
45	32
46	69
47	89
48	41
49	46
50	35
51	48
52	38
53	57
54	66
55	45
56	50
57	44
58	55
59	47
60	99
61	68
62	98
63	53
64	54
65	56
66	65
67	77
68	61
69	62
70	60
71	105
72	104
73	58
74	70
75	75
76	67
77	79