A348389 - cp's OEIS frontend

A348389 Irregular triangle read by rows: row n gives for n >= 2 a concatenation of the finite sequences of the multiples of k, larger than k and not exceeding n, for k = 1, 2, ..., floor(n/2).

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	4
8	4
9	2
10	3
11	4
12	5
13	4
14	2
15	3
16	4
17	5
18	6
19	4
20	6
21	6
22	2
23	3
24	4
25	5
26	6
27	7
28	4
29	6
30	6
31	2
32	3
33	4
34	5
35	6
36	7
37	8
38	4
39	6
40	8
41	6
42	8
43	2
44	3
45	4
46	5
47	6
48	7
49	8
50	9
51	4
52	6
53	8
54	6
55	9
56	8
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	4
67	6
68	8
69	10
70	6
71	9
72	8
73	10
74	2
75	3
76	4
77	5
78	6
79	7
80	8
81	9
82	10
83	11
84	4
85	6
86	8
87	10
88	6
89	9
90	8
91	10
92	2
93	3
94	4
95	5
96	6
97	7
98	8
99	9
100	10
101	11
102	12
103	4
104	6
105	8
106	10
107	12
108	6
109	9
110	12
111	8
112	12
113	10
114	12

[2, 2, 3, 2, 3, 4, 4, 2, 3, 4, 5, 4, 2, 3, 4, 5, 6, 4, 6, 6, 2, 3, 4, 5, 6, 7, 4, 6, 6, 2, 3, 4, 5, 6, 7, 8, 4, 6, 8, 6, 8, 2, 3, 4, 5, 6, 7, 8, 9, 4, 6, 8, 6, 9, 8, 2, 3, 4, 5, 6, 7, 8, 9, 10, 4, 6, 8, 10, 6, 9, 8, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 4, 6, 8, 10, 6, 9, 8, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 4, 6, 8, 10, 12, 6, 9, 12, 8, 12, 10, 12]

cp's OEIS Frontend

A348389 Irregular triangle read by rows: row n gives for n >= 2 a concatenation of the finite sequences of the multiples of k, larger than k and not exceeding n, for k = 1, 2, ..., floor(n/2).

Table of values

List of values

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	4
8	4
9	2
10	3
11	4
12	5
13	4
14	2
15	3
16	4
17	5
18	6
19	4
20	6
21	6
22	2
23	3
24	4
25	5
26	6
27	7
28	4
29	6
30	6
31	2
32	3
33	4
34	5
35	6
36	7
37	8
38	4
39	6
40	8
41	6
42	8
43	2
44	3
45	4
46	5
47	6
48	7
49	8
50	9
51	4
52	6
53	8
54	6
55	9
56	8
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	4
67	6
68	8
69	10
70	6
71	9
72	8
73	10
74	2
75	3
76	4
77	5
78	6
79	7
80	8
81	9
82	10
83	11
84	4
85	6
86	8
87	10
88	6
89	9
90	8
91	10
92	2
93	3
94	4
95	5
96	6
97	7
98	8
99	9
100	10
101	11
102	12
103	4
104	6
105	8
106	10
107	12
108	6
109	9
110	12
111	8
112	12
113	10
114	12

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	4
8	4
9	2
10	3
11	4
12	5
13	4
14	2
15	3
16	4
17	5
18	6
19	4
20	6
21	6
22	2
23	3
24	4
25	5
26	6
27	7
28	4
29	6
30	6
31	2
32	3
33	4
34	5
35	6
36	7
37	8
38	4
39	6
40	8
41	6
42	8
43	2
44	3
45	4
46	5
47	6
48	7
49	8
50	9
51	4
52	6
53	8
54	6
55	9
56	8
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	4
67	6
68	8
69	10
70	6
71	9
72	8
73	10
74	2
75	3
76	4
77	5
78	6
79	7
80	8
81	9
82	10
83	11
84	4
85	6
86	8
87	10
88	6
89	9
90	8
91	10
92	2
93	3
94	4
95	5
96	6
97	7
98	8
99	9
100	10
101	11
102	12
103	4
104	6
105	8
106	10
107	12
108	6
109	9
110	12
111	8
112	12
113	10
114	12

n	a(n)
2	2
3	2
4	3
5	2
6	3
7	4
8	4
9	2
10	3
11	4
12	5
13	4
14	2
15	3
16	4
17	5
18	6
19	4
20	6
21	6
22	2
23	3
24	4
25	5
26	6
27	7
28	4
29	6
30	6
31	2
32	3
33	4
34	5
35	6
36	7
37	8
38	4
39	6
40	8
41	6
42	8
43	2
44	3
45	4
46	5
47	6
48	7
49	8
50	9
51	4
52	6
53	8
54	6
55	9
56	8
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	4
67	6
68	8
69	10
70	6
71	9
72	8
73	10
74	2
75	3
76	4
77	5
78	6
79	7
80	8
81	9
82	10
83	11
84	4
85	6
86	8
87	10
88	6
89	9
90	8
91	10
92	2
93	3
94	4
95	5
96	6
97	7
98	8
99	9
100	10
101	11
102	12
103	4
104	6
105	8
106	10
107	12
108	6
109	9
110	12
111	8
112	12
113	10
114	12