A169786 - cp's OEIS frontend

A169786 Triangle read by rows: T(n,k) is number of cells that turn from OFF to ON at stage k of the growth of the obtuse triangle of hexagons described in the comment.

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	3
8	5
9	3
10	3
11	1
12	1
13	2
14	3
15	5
16	5
17	5
18	9
19	13
20	7
21	3
22	5
23	8
24	6
25	4
26	1
27	1
28	2
29	3
30	5
31	5
32	5
33	9
34	13
35	9
36	5
37	9
38	15
39	19
40	17
41	21
42	29
43	15
44	3
45	5
46	8
47	10
48	10
49	14
50	22
51	18
52	8
53	8
54	13
55	10
56	5
57	1
58	1
59	2
60	3
61	5
62	5
63	5
64	9
65	13
66	9
67	5
68	9
69	15
70	19
71	17
72	21
73	29
74	17
75	5
76	9
77	15
78	19
79	19
80	27
81	43
82	43
83	25
84	21
85	37
86	51
87	47
88	51
89	63

[1, 1, 2, 1, 1, 2, 3, 5, 3, 3, 1, 1, 2, 3, 5, 5, 5, 9, 13, 7, 3, 5, 8, 6, 4, 1, 1, 2, 3, 5, 5, 5, 9, 13, 9, 5, 9, 15, 19, 17, 21, 29, 15, 3, 5, 8, 10, 10, 14, 22, 18, 8, 8, 13, 10, 5, 1, 1, 2, 3, 5, 5, 5, 9, 13, 9, 5, 9, 15, 19, 17, 21, 29, 17, 5, 9, 15, 19, 19, 27, 43, 43, 25, 21, 37, 51, 47, 51, 63]

cp's OEIS Frontend

A169786 Triangle read by rows: T(n,k) is number of cells that turn from OFF to ON at stage k of the growth of the obtuse triangle of hexagons described in the comment.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	3
8	5
9	3
10	3
11	1
12	1
13	2
14	3
15	5
16	5
17	5
18	9
19	13
20	7
21	3
22	5
23	8
24	6
25	4
26	1
27	1
28	2
29	3
30	5
31	5
32	5
33	9
34	13
35	9
36	5
37	9
38	15
39	19
40	17
41	21
42	29
43	15
44	3
45	5
46	8
47	10
48	10
49	14
50	22
51	18
52	8
53	8
54	13
55	10
56	5
57	1
58	1
59	2
60	3
61	5
62	5
63	5
64	9
65	13
66	9
67	5
68	9
69	15
70	19
71	17
72	21
73	29
74	17
75	5
76	9
77	15
78	19
79	19
80	27
81	43
82	43
83	25
84	21
85	37
86	51
87	47
88	51
89	63

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	3
8	5
9	3
10	3
11	1
12	1
13	2
14	3
15	5
16	5
17	5
18	9
19	13
20	7
21	3
22	5
23	8
24	6
25	4
26	1
27	1
28	2
29	3
30	5
31	5
32	5
33	9
34	13
35	9
36	5
37	9
38	15
39	19
40	17
41	21
42	29
43	15
44	3
45	5
46	8
47	10
48	10
49	14
50	22
51	18
52	8
53	8
54	13
55	10
56	5
57	1
58	1
59	2
60	3
61	5
62	5
63	5
64	9
65	13
66	9
67	5
68	9
69	15
70	19
71	17
72	21
73	29
74	17
75	5
76	9
77	15
78	19
79	19
80	27
81	43
82	43
83	25
84	21
85	37
86	51
87	47
88	51
89	63

n	a(n)
1	1
2	1
3	2
4	1
5	1
6	2
7	3
8	5
9	3
10	3
11	1
12	1
13	2
14	3
15	5
16	5
17	5
18	9
19	13
20	7
21	3
22	5
23	8
24	6
25	4
26	1
27	1
28	2
29	3
30	5
31	5
32	5
33	9
34	13
35	9
36	5
37	9
38	15
39	19
40	17
41	21
42	29
43	15
44	3
45	5
46	8
47	10
48	10
49	14
50	22
51	18
52	8
53	8
54	13
55	10
56	5
57	1
58	1
59	2
60	3
61	5
62	5
63	5
64	9
65	13
66	9
67	5
68	9
69	15
70	19
71	17
72	21
73	29
74	17
75	5
76	9
77	15
78	19
79	19
80	27
81	43
82	43
83	25
84	21
85	37
86	51
87	47
88	51
89	63