A257335 - cp's OEIS frontend

A257335 Construct spiral of numbers on square grid as in Comments; sequence gives terms along the "2" arm.

n	a(n)
1	2
2	7
3	10
4	19
5	15
6	31
7	20
8	27
9	32
10	39
11	38
12	51
13	50
14	61
15	56
16	65
17	64
18	75
19	74
20	83
21	78
22	95
23	86
24	91
25	94
26	107
27	100
28	117
29	110
30	119
31	114
32	137
33	120
34	139
35	126
36	149
37	142
38	155
39	152
40	163
41	156
42	173
43	165
44	191
45	170
46	193
47	182
48	199
49	186
50	205
51	196
52	215
53	204
54	223
55	210
56	233
57	222

[2, 7, 10, 19, 15, 31, 20, 27, 32, 39, 38, 51, 50, 61, 56, 65, 64, 75, 74, 83, 78, 95, 86, 91, 94, 107, 100, 117, 110, 119, 114, 137, 120, 139, 126, 149, 142, 155, 152, 163, 156, 173, 165, 191, 170, 193, 182, 199, 186, 205, 196, 215, 204, 223, 210, 233, 222]

cp's OEIS Frontend

A257335 Construct spiral of numbers on square grid as in Comments; sequence gives terms along the "2" arm.

Table of values

List of values

n	a(n)
1	2
2	7
3	10
4	19
5	15
6	31
7	20
8	27
9	32
10	39
11	38
12	51
13	50
14	61
15	56
16	65
17	64
18	75
19	74
20	83
21	78
22	95
23	86
24	91
25	94
26	107
27	100
28	117
29	110
30	119
31	114
32	137
33	120
34	139
35	126
36	149
37	142
38	155
39	152
40	163
41	156
42	173
43	165
44	191
45	170
46	193
47	182
48	199
49	186
50	205
51	196
52	215
53	204
54	223
55	210
56	233
57	222

n	a(n)
1	2
2	7
3	10
4	19
5	15
6	31
7	20
8	27
9	32
10	39
11	38
12	51
13	50
14	61
15	56
16	65
17	64
18	75
19	74
20	83
21	78
22	95
23	86
24	91
25	94
26	107
27	100
28	117
29	110
30	119
31	114
32	137
33	120
34	139
35	126
36	149
37	142
38	155
39	152
40	163
41	156
42	173
43	165
44	191
45	170
46	193
47	182
48	199
49	186
50	205
51	196
52	215
53	204
54	223
55	210
56	233
57	222

n	a(n)
1	2
2	7
3	10
4	19
5	15
6	31
7	20
8	27
9	32
10	39
11	38
12	51
13	50
14	61
15	56
16	65
17	64
18	75
19	74
20	83
21	78
22	95
23	86
24	91
25	94
26	107
27	100
28	117
29	110
30	119
31	114
32	137
33	120
34	139
35	126
36	149
37	142
38	155
39	152
40	163
41	156
42	173
43	165
44	191
45	170
46	193
47	182
48	199
49	186
50	205
51	196
52	215
53	204
54	223
55	210
56	233
57	222