A321301 - cp's OEIS frontend

A321301 Lexicographically last sequence of positive integers whose terms can be grouped and summed to produce the natural numbers as well as the prime numbers.

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

[1, 1, 1, 2, 1, 4, 5, 2, 4, 7, 8, 5, 4, 10, 3, 8, 11, 1, 13, 9, 5, 15, 9, 7, 17, 7, 11, 19, 7, 13, 21, 7, 15, 23, 5, 19, 25, 3, 23, 27, 3, 25, 29, 5, 25, 31, 5, 27, 33, 7, 27, 35, 9, 27, 37, 9, 29, 39, 11, 29, 41, 13, 29, 43, 17, 27, 45, 25, 21, 47, 33, 15, 49]

cp's OEIS Frontend

A321301 Lexicographically last sequence of positive integers whose terms can be grouped and summed to produce the natural numbers as well as the prime numbers.

Table of values

List of values

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

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

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