A335074 - cp's OEIS frontend

A335074 Triangle read by rows: consider a figure made up of a row of n congruent rectangles and the diagonals of all possible rectangles; T(n,k) (1 <= k <= n-1) is the number of vertices on the edge separating rectangles k and k+1.

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

[1, 3, 3, 5, 3, 5, 7, 7, 7, 7, 9, 9, 7, 9, 9, 11, 13, 11, 11, 13, 11, 13, 15, 17, 11, 17, 15, 13, 15, 19, 19, 19, 19, 19, 19, 15, 17, 21, 25, 21, 19, 21, 25, 21, 17, 19, 25, 29, 29, 23, 23, 29, 29, 25, 19, 21, 27, 33, 33, 33, 23, 33, 33, 33, 27, 21, 23, 31, 37, 39, 39, 35, 35, 39, 39, 37, 31, 23]

cp's OEIS Frontend

A335074 Triangle read by rows: consider a figure made up of a row of n congruent rectangles and the diagonals of all possible rectangles; T(n,k) (1 <= k <= n-1) is the number of vertices on the edge separating rectangles k and k+1.

Table of values

List of values

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

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

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