A081517 - cp's OEIS frontend

A081517 Consider the smallest number m which can be expressed as the sum of n distinct numbers coprime to m. Sequence gives triangle (read by rows) of the set of coprime numbers pertaining to m. When there is a choice, use the lexicographically earliest solution.

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	4
7	1
8	2
9	3
10	5
11	1
12	2
13	3
14	4
15	7
16	1
17	2
18	3
19	4
20	5
21	8
22	1
23	2
24	3
25	4
26	5
27	6
28	8
29	1
30	2
31	3
32	4
33	5
34	6
35	7
36	9
37	1
38	2
39	3
40	4
41	5
42	6
43	7
44	8
45	11
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	8
54	9
55	14
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	12
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	9
76	10
77	11
78	13
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	19

[1, 1, 2, 1, 2, 4, 1, 2, 3, 5, 1, 2, 3, 4, 7, 1, 2, 3, 4, 5, 8, 1, 2, 3, 4, 5, 6, 8, 1, 2, 3, 4, 5, 6, 7, 9, 1, 2, 3, 4, 5, 6, 7, 8, 11, 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19]

cp's OEIS Frontend

A081517 Consider the smallest number m which can be expressed as the sum of n distinct numbers coprime to m. Sequence gives triangle (read by rows) of the set of coprime numbers pertaining to m. When there is a choice, use the lexicographically earliest solution.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	4
7	1
8	2
9	3
10	5
11	1
12	2
13	3
14	4
15	7
16	1
17	2
18	3
19	4
20	5
21	8
22	1
23	2
24	3
25	4
26	5
27	6
28	8
29	1
30	2
31	3
32	4
33	5
34	6
35	7
36	9
37	1
38	2
39	3
40	4
41	5
42	6
43	7
44	8
45	11
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	8
54	9
55	14
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	12
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	9
76	10
77	11
78	13
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	19

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	4
7	1
8	2
9	3
10	5
11	1
12	2
13	3
14	4
15	7
16	1
17	2
18	3
19	4
20	5
21	8
22	1
23	2
24	3
25	4
26	5
27	6
28	8
29	1
30	2
31	3
32	4
33	5
34	6
35	7
36	9
37	1
38	2
39	3
40	4
41	5
42	6
43	7
44	8
45	11
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	8
54	9
55	14
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	12
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	9
76	10
77	11
78	13
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	19

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	4
7	1
8	2
9	3
10	5
11	1
12	2
13	3
14	4
15	7
16	1
17	2
18	3
19	4
20	5
21	8
22	1
23	2
24	3
25	4
26	5
27	6
28	8
29	1
30	2
31	3
32	4
33	5
34	6
35	7
36	9
37	1
38	2
39	3
40	4
41	5
42	6
43	7
44	8
45	11
46	1
47	2
48	3
49	4
50	5
51	6
52	7
53	8
54	9
55	14
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	12
67	1
68	2
69	3
70	4
71	5
72	6
73	7
74	8
75	9
76	10
77	11
78	13
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	19