A294337 - cp's OEIS frontend

A294337 Number of ways to write 2^n as a finite power-tower a^(b^(c^...)) of positive integers greater than one.

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	4
7	2
8	6
9	4
10	4
11	2
12	7
13	2
14	4
15	4
16	10
17	2
18	7
19	2
20	7
21	4
22	4
23	2
24	10
25	4
26	4
27	6
28	7
29	2
30	8
31	2
32	12
33	4
34	4
35	4
36	12
37	2
38	4
39	4
40	10
41	2
42	8
43	2
44	7
45	7
46	4
47	2
48	15
49	4
50	7
51	4
52	7
53	2
54	10
55	4
56	10
57	4
58	4
59	2
60	13
61	2
62	4
63	7
64	16
65	4
66	8
67	2
68	7
69	4
70	8
71	2
72	16
73	2
74	4
75	7
76	7
77	4
78	8
79	2
80	15
81	10
82	4
83	2
84	13
85	4
86	4
87	4
88	10
89	2
90	13
91	4
92	7
93	4
94	4
95	4
96	18
97	2
98	7
99	7
100	12
101	2
102	8
103	2
104	10
105	8

[1, 2, 2, 4, 2, 4, 2, 6, 4, 4, 2, 7, 2, 4, 4, 10, 2, 7, 2, 7, 4, 4, 2, 10, 4, 4, 6, 7, 2, 8, 2, 12, 4, 4, 4, 12, 2, 4, 4, 10, 2, 8, 2, 7, 7, 4, 2, 15, 4, 7, 4, 7, 2, 10, 4, 10, 4, 4, 2, 13, 2, 4, 7, 16, 4, 8, 2, 7, 4, 8, 2, 16, 2, 4, 7, 7, 4, 8, 2, 15, 10, 4, 2, 13, 4, 4, 4, 10, 2, 13, 4, 7, 4, 4, 4, 18, 2, 7, 7, 12, 2, 8, 2, 10, 8]

cp's OEIS Frontend

A294337 Number of ways to write 2^n as a finite power-tower a^(b^(c^...)) of positive integers greater than one.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	4
7	2
8	6
9	4
10	4
11	2
12	7
13	2
14	4
15	4
16	10
17	2
18	7
19	2
20	7
21	4
22	4
23	2
24	10
25	4
26	4
27	6
28	7
29	2
30	8
31	2
32	12
33	4
34	4
35	4
36	12
37	2
38	4
39	4
40	10
41	2
42	8
43	2
44	7
45	7
46	4
47	2
48	15
49	4
50	7
51	4
52	7
53	2
54	10
55	4
56	10
57	4
58	4
59	2
60	13
61	2
62	4
63	7
64	16
65	4
66	8
67	2
68	7
69	4
70	8
71	2
72	16
73	2
74	4
75	7
76	7
77	4
78	8
79	2
80	15
81	10
82	4
83	2
84	13
85	4
86	4
87	4
88	10
89	2
90	13
91	4
92	7
93	4
94	4
95	4
96	18
97	2
98	7
99	7
100	12
101	2
102	8
103	2
104	10
105	8

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	4
7	2
8	6
9	4
10	4
11	2
12	7
13	2
14	4
15	4
16	10
17	2
18	7
19	2
20	7
21	4
22	4
23	2
24	10
25	4
26	4
27	6
28	7
29	2
30	8
31	2
32	12
33	4
34	4
35	4
36	12
37	2
38	4
39	4
40	10
41	2
42	8
43	2
44	7
45	7
46	4
47	2
48	15
49	4
50	7
51	4
52	7
53	2
54	10
55	4
56	10
57	4
58	4
59	2
60	13
61	2
62	4
63	7
64	16
65	4
66	8
67	2
68	7
69	4
70	8
71	2
72	16
73	2
74	4
75	7
76	7
77	4
78	8
79	2
80	15
81	10
82	4
83	2
84	13
85	4
86	4
87	4
88	10
89	2
90	13
91	4
92	7
93	4
94	4
95	4
96	18
97	2
98	7
99	7
100	12
101	2
102	8
103	2
104	10
105	8

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	4
7	2
8	6
9	4
10	4
11	2
12	7
13	2
14	4
15	4
16	10
17	2
18	7
19	2
20	7
21	4
22	4
23	2
24	10
25	4
26	4
27	6
28	7
29	2
30	8
31	2
32	12
33	4
34	4
35	4
36	12
37	2
38	4
39	4
40	10
41	2
42	8
43	2
44	7
45	7
46	4
47	2
48	15
49	4
50	7
51	4
52	7
53	2
54	10
55	4
56	10
57	4
58	4
59	2
60	13
61	2
62	4
63	7
64	16
65	4
66	8
67	2
68	7
69	4
70	8
71	2
72	16
73	2
74	4
75	7
76	7
77	4
78	8
79	2
80	15
81	10
82	4
83	2
84	13
85	4
86	4
87	4
88	10
89	2
90	13
91	4
92	7
93	4
94	4
95	4
96	18
97	2
98	7
99	7
100	12
101	2
102	8
103	2
104	10
105	8