A294339 - cp's OEIS frontend

A294339 Number of ways to write 2^n as a finite power-tower of positive integers greater than one, allowing both left and right nesting of parentheses.

n	a(n)
1	1
2	2
3	2
4	5
5	2
6	6
7	2
8	12
9	5
10	6
11	2
12	19
13	2
14	6
15	6
16	32
17	2
18	19
19	2
20	19
21	6
22	6
23	2
24	56
25	5
26	6
27	12
28	19
29	2
30	26
31	2
32	79
33	6
34	6
35	6
36	71
37	2
38	6
39	6
40	56
41	2
42	26
43	2
44	19
45	19
46	6
47	2
48	169
49	5
50	19
51	6
52	19
53	2
54	56
55	6
56	56
57	6
58	6
59	2
60	101
61	2
62	6
63	19
64	203
65	6
66	26
67	2
68	19
69	6
70	26
71	2
72	237
73	2
74	6
75	19
76	19

[1, 2, 2, 5, 2, 6, 2, 12, 5, 6, 2, 19, 2, 6, 6, 32, 2, 19, 2, 19, 6, 6, 2, 56, 5, 6, 12, 19, 2, 26, 2, 79, 6, 6, 6, 71, 2, 6, 6, 56, 2, 26, 2, 19, 19, 6, 2, 169, 5, 19, 6, 19, 2, 56, 6, 56, 6, 6, 2, 101, 2, 6, 19, 203, 6, 26, 2, 19, 6, 26, 2, 237, 2, 6, 19, 19]

cp's OEIS Frontend

A294339 Number of ways to write 2^n as a finite power-tower of positive integers greater than one, allowing both left and right nesting of parentheses.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	5
5	2
6	6
7	2
8	12
9	5
10	6
11	2
12	19
13	2
14	6
15	6
16	32
17	2
18	19
19	2
20	19
21	6
22	6
23	2
24	56
25	5
26	6
27	12
28	19
29	2
30	26
31	2
32	79
33	6
34	6
35	6
36	71
37	2
38	6
39	6
40	56
41	2
42	26
43	2
44	19
45	19
46	6
47	2
48	169
49	5
50	19
51	6
52	19
53	2
54	56
55	6
56	56
57	6
58	6
59	2
60	101
61	2
62	6
63	19
64	203
65	6
66	26
67	2
68	19
69	6
70	26
71	2
72	237
73	2
74	6
75	19
76	19

n	a(n)
1	1
2	2
3	2
4	5
5	2
6	6
7	2
8	12
9	5
10	6
11	2
12	19
13	2
14	6
15	6
16	32
17	2
18	19
19	2
20	19
21	6
22	6
23	2
24	56
25	5
26	6
27	12
28	19
29	2
30	26
31	2
32	79
33	6
34	6
35	6
36	71
37	2
38	6
39	6
40	56
41	2
42	26
43	2
44	19
45	19
46	6
47	2
48	169
49	5
50	19
51	6
52	19
53	2
54	56
55	6
56	56
57	6
58	6
59	2
60	101
61	2
62	6
63	19
64	203
65	6
66	26
67	2
68	19
69	6
70	26
71	2
72	237
73	2
74	6
75	19
76	19

n	a(n)
1	1
2	2
3	2
4	5
5	2
6	6
7	2
8	12
9	5
10	6
11	2
12	19
13	2
14	6
15	6
16	32
17	2
18	19
19	2
20	19
21	6
22	6
23	2
24	56
25	5
26	6
27	12
28	19
29	2
30	26
31	2
32	79
33	6
34	6
35	6
36	71
37	2
38	6
39	6
40	56
41	2
42	26
43	2
44	19
45	19
46	6
47	2
48	169
49	5
50	19
51	6
52	19
53	2
54	56
55	6
56	56
57	6
58	6
59	2
60	101
61	2
62	6
63	19
64	203
65	6
66	26
67	2
68	19
69	6
70	26
71	2
72	237
73	2
74	6
75	19
76	19