A282904 - cp's OEIS frontend

A282904 Concatenation of the numbers of elements of P{1}, P{1, 2}, P{1, 2, 3}, ..., P{1, 2, 3, ..., n}; where P{A} denote the power set of set A ordered by the size of the subsets, and in each subset, following the increasing order.

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

[1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 3, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3]

cp's OEIS Frontend

A282904 Concatenation of the numbers of elements of P{1}, P{1, 2}, P{1, 2, 3}, ..., P{1, 2, 3, ..., n}; where P{A} denote the power set of set A ordered by the size of the subsets, and in each subset, following the increasing order.

Table of values

List of values

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

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

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