A300154 - cp's OEIS frontend

A300154 Consider a spiral on an infinite hexagonal grid. a(n) is the number of cells in the part of the spiral from 1st to n-th cell that are on the same column or diagonal (in any of three directions) as the n-th cell along the spiral, including that cell itself.

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	5
8	5
9	5
10	6
11	6
12	7
13	6
14	7
15	7
16	8
17	7
18	8
19	9
20	8
21	9
22	8
23	9
24	10
25	9
26	10
27	11
28	9
29	10
30	11
31	10
32	11
33	12
34	10
35	11
36	12
37	13
38	11
39	12
40	13
41	11
42	12
43	13
44	14
45	12
46	13
47	14
48	15
49	12
50	13
51	14
52	15
53	13
54	14
55	15
56	16
57	13
58	14
59	15
60	16
61	17
62	14

[1, 2, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 6, 7, 7, 8, 7, 8, 9, 8, 9, 8, 9, 10, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 13, 11, 12, 13, 11, 12, 13, 14, 12, 13, 14, 15, 12, 13, 14, 15, 13, 14, 15, 16, 13, 14, 15, 16, 17, 14]

cp's OEIS Frontend

A300154 Consider a spiral on an infinite hexagonal grid. a(n) is the number of cells in the part of the spiral from 1st to n-th cell that are on the same column or diagonal (in any of three directions) as the n-th cell along the spiral, including that cell itself.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	5
8	5
9	5
10	6
11	6
12	7
13	6
14	7
15	7
16	8
17	7
18	8
19	9
20	8
21	9
22	8
23	9
24	10
25	9
26	10
27	11
28	9
29	10
30	11
31	10
32	11
33	12
34	10
35	11
36	12
37	13
38	11
39	12
40	13
41	11
42	12
43	13
44	14
45	12
46	13
47	14
48	15
49	12
50	13
51	14
52	15
53	13
54	14
55	15
56	16
57	13
58	14
59	15
60	16
61	17
62	14

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	5
8	5
9	5
10	6
11	6
12	7
13	6
14	7
15	7
16	8
17	7
18	8
19	9
20	8
21	9
22	8
23	9
24	10
25	9
26	10
27	11
28	9
29	10
30	11
31	10
32	11
33	12
34	10
35	11
36	12
37	13
38	11
39	12
40	13
41	11
42	12
43	13
44	14
45	12
46	13
47	14
48	15
49	12
50	13
51	14
52	15
53	13
54	14
55	15
56	16
57	13
58	14
59	15
60	16
61	17
62	14

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	5
8	5
9	5
10	6
11	6
12	7
13	6
14	7
15	7
16	8
17	7
18	8
19	9
20	8
21	9
22	8
23	9
24	10
25	9
26	10
27	11
28	9
29	10
30	11
31	10
32	11
33	12
34	10
35	11
36	12
37	13
38	11
39	12
40	13
41	11
42	12
43	13
44	14
45	12
46	13
47	14
48	15
49	12
50	13
51	14
52	15
53	13
54	14
55	15
56	16
57	13
58	14
59	15
60	16
61	17
62	14