A138099 - cp's OEIS frontend

A138099 Irregular triangle read by rows: T(n,k) = k + floor(n/2), 1 <= k <= ceiling(n/2).

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

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

cp's OEIS Frontend

A138099 Irregular triangle read by rows: T(n,k) = k + floor(n/2), 1 <= k <= ceiling(n/2).

Table of values

List of values

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

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

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