A335056 - cp's OEIS frontend

A335056 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) is the number of vertices inside the k-th rectangle.

n	a(n)
1	1
2	3
3	3
4	5
5	11
6	5
7	7
8	19
9	19
10	7
11	9
12	29
13	43
14	29
15	9
16	11
17	37
18	61
19	61
20	37
21	11
22	13
23	47
24	83
25	105
26	83
27	47
28	13
29	15
30	57
31	103
32	143
33	143
34	103
35	57
36	15
37	17
38	69
39	125
40	183
41	211
42	183
43	125
44	69
45	17
46	19
47	81
48	143
49	215
50	267
51	267
52	215
53	143
54	81
55	19
56	21
57	95
58	167
59	253
60	329
61	369
62	329
63	253
64	167
65	95
66	21
67	23
68	109
69	189
70	289
71	385
72	455
73	455
74	385
75	289
76	189
77	109
78	23

[1, 3, 3, 5, 11, 5, 7, 19, 19, 7, 9, 29, 43, 29, 9, 11, 37, 61, 61, 37, 11, 13, 47, 83, 105, 83, 47, 13, 15, 57, 103, 143, 143, 103, 57, 15, 17, 69, 125, 183, 211, 183, 125, 69, 17, 19, 81, 143, 215, 267, 267, 215, 143, 81, 19, 21, 95, 167, 253, 329, 369, 329, 253, 167, 95, 21, 23, 109, 189, 289, 385, 455, 455, 385, 289, 189, 109, 23]

cp's OEIS Frontend

A335056 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) is the number of vertices inside the k-th rectangle.

Table of values

List of values

n	a(n)
1	1
2	3
3	3
4	5
5	11
6	5
7	7
8	19
9	19
10	7
11	9
12	29
13	43
14	29
15	9
16	11
17	37
18	61
19	61
20	37
21	11
22	13
23	47
24	83
25	105
26	83
27	47
28	13
29	15
30	57
31	103
32	143
33	143
34	103
35	57
36	15
37	17
38	69
39	125
40	183
41	211
42	183
43	125
44	69
45	17
46	19
47	81
48	143
49	215
50	267
51	267
52	215
53	143
54	81
55	19
56	21
57	95
58	167
59	253
60	329
61	369
62	329
63	253
64	167
65	95
66	21
67	23
68	109
69	189
70	289
71	385
72	455
73	455
74	385
75	289
76	189
77	109
78	23

n	a(n)
1	1
2	3
3	3
4	5
5	11
6	5
7	7
8	19
9	19
10	7
11	9
12	29
13	43
14	29
15	9
16	11
17	37
18	61
19	61
20	37
21	11
22	13
23	47
24	83
25	105
26	83
27	47
28	13
29	15
30	57
31	103
32	143
33	143
34	103
35	57
36	15
37	17
38	69
39	125
40	183
41	211
42	183
43	125
44	69
45	17
46	19
47	81
48	143
49	215
50	267
51	267
52	215
53	143
54	81
55	19
56	21
57	95
58	167
59	253
60	329
61	369
62	329
63	253
64	167
65	95
66	21
67	23
68	109
69	189
70	289
71	385
72	455
73	455
74	385
75	289
76	189
77	109
78	23

n	a(n)
1	1
2	3
3	3
4	5
5	11
6	5
7	7
8	19
9	19
10	7
11	9
12	29
13	43
14	29
15	9
16	11
17	37
18	61
19	61
20	37
21	11
22	13
23	47
24	83
25	105
26	83
27	47
28	13
29	15
30	57
31	103
32	143
33	143
34	103
35	57
36	15
37	17
38	69
39	125
40	183
41	211
42	183
43	125
44	69
45	17
46	19
47	81
48	143
49	215
50	267
51	267
52	215
53	143
54	81
55	19
56	21
57	95
58	167
59	253
60	329
61	369
62	329
63	253
64	167
65	95
66	21
67	23
68	109
69	189
70	289
71	385
72	455
73	455
74	385
75	289
76	189
77	109
78	23