A333286 - cp's OEIS frontend

A333286 Triangle read by rows: consider a figure made up of a row of n congruent rectangles and the diagonals of all visible rectangles; T(n,k) (1 <= k <= n) is the number of triangular regions in the k-th rectangle.

n	a(n)
1	4
2	7
3	7
4	9
5	14
6	9
7	11
8	24
9	24
10	11
11	13
12	30
13	38
14	30
15	13
16	15
17	38
18	60
19	60
20	38
21	15
22	17
23	44
24	76
25	86
26	76
27	44
28	17
29	19
30	52
31	92
32	120
33	120
34	92
35	52
36	19
37	21
38	58
39	106
40	146
41	158
42	146
43	106
44	58
45	21
46	23
47	66
48	126
49	178
50	216
51	216
52	178
53	126
54	66
55	23
56	25
57	72
58	142
59	206
60	264
61	278

[4, 7, 7, 9, 14, 9, 11, 24, 24, 11, 13, 30, 38, 30, 13, 15, 38, 60, 60, 38, 15, 17, 44, 76, 86, 76, 44, 17, 19, 52, 92, 120, 120, 92, 52, 19, 21, 58, 106, 146, 158, 146, 106, 58, 21, 23, 66, 126, 178, 216, 216, 178, 126, 66, 23, 25, 72, 142, 206, 264, 278]

cp's OEIS Frontend

A333286 Triangle read by rows: consider a figure made up of a row of n congruent rectangles and the diagonals of all visible rectangles; T(n,k) (1 <= k <= n) is the number of triangular regions in the k-th rectangle.

Table of values

List of values

n	a(n)
1	4
2	7
3	7
4	9
5	14
6	9
7	11
8	24
9	24
10	11
11	13
12	30
13	38
14	30
15	13
16	15
17	38
18	60
19	60
20	38
21	15
22	17
23	44
24	76
25	86
26	76
27	44
28	17
29	19
30	52
31	92
32	120
33	120
34	92
35	52
36	19
37	21
38	58
39	106
40	146
41	158
42	146
43	106
44	58
45	21
46	23
47	66
48	126
49	178
50	216
51	216
52	178
53	126
54	66
55	23
56	25
57	72
58	142
59	206
60	264
61	278

n	a(n)
1	4
2	7
3	7
4	9
5	14
6	9
7	11
8	24
9	24
10	11
11	13
12	30
13	38
14	30
15	13
16	15
17	38
18	60
19	60
20	38
21	15
22	17
23	44
24	76
25	86
26	76
27	44
28	17
29	19
30	52
31	92
32	120
33	120
34	92
35	52
36	19
37	21
38	58
39	106
40	146
41	158
42	146
43	106
44	58
45	21
46	23
47	66
48	126
49	178
50	216
51	216
52	178
53	126
54	66
55	23
56	25
57	72
58	142
59	206
60	264
61	278

n	a(n)
1	4
2	7
3	7
4	9
5	14
6	9
7	11
8	24
9	24
10	11
11	13
12	30
13	38
14	30
15	13
16	15
17	38
18	60
19	60
20	38
21	15
22	17
23	44
24	76
25	86
26	76
27	44
28	17
29	19
30	52
31	92
32	120
33	120
34	92
35	52
36	19
37	21
38	58
39	106
40	146
41	158
42	146
43	106
44	58
45	21
46	23
47	66
48	126
49	178
50	216
51	216
52	178
53	126
54	66
55	23
56	25
57	72
58	142
59	206
60	264
61	278