A007448 - cp's OEIS frontend

A007448 Knuth's sequence (or Knuth numbers): a(n+1) = 1 + min( 2a(floor(n/2)), 3a(floor(n/3)) ).

n	a(n)
0	1
1	3
2	3
3	4
4	7
5	7
6	7
7	9
8	9
9	10
10	13
11	13
12	13
13	15
14	15
15	19
16	19
17	19
18	19
19	21
20	21
21	22
22	27
23	27
24	27
25	27
26	27
27	28
28	31
29	31
30	31
31	39
32	39
33	39
34	39
35	39
36	39
37	39
38	39
39	40
40	43
41	43
42	43
43	45
44	45
45	46
46	55
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	57
56	57
57	58
58	63
59	63
60	63
61	63
62	63
63	64
64	67
65	67
66	67
67	79
68	79
69	79
70	79

[1, 3, 3, 4, 7, 7, 7, 9, 9, 10, 13, 13, 13, 15, 15, 19, 19, 19, 19, 21, 21, 22, 27, 27, 27, 27, 27, 28, 31, 31, 31, 39, 39, 39, 39, 39, 39, 39, 39, 40, 43, 43, 43, 45, 45, 46, 55, 55, 55, 55, 55, 55, 55, 55, 55, 57, 57, 58, 63, 63, 63, 63, 63, 64, 67, 67, 67, 79, 79, 79, 79]

cp's OEIS Frontend

A007448 Knuth's sequence (or Knuth numbers): a(n+1) = 1 + min( 2a(floor(n/2)), 3a(floor(n/3)) ).

Table of values

List of values

n	a(n)
0	1
1	3
2	3
3	4
4	7
5	7
6	7
7	9
8	9
9	10
10	13
11	13
12	13
13	15
14	15
15	19
16	19
17	19
18	19
19	21
20	21
21	22
22	27
23	27
24	27
25	27
26	27
27	28
28	31
29	31
30	31
31	39
32	39
33	39
34	39
35	39
36	39
37	39
38	39
39	40
40	43
41	43
42	43
43	45
44	45
45	46
46	55
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	57
56	57
57	58
58	63
59	63
60	63
61	63
62	63
63	64
64	67
65	67
66	67
67	79
68	79
69	79
70	79

n	a(n)
0	1
1	3
2	3
3	4
4	7
5	7
6	7
7	9
8	9
9	10
10	13
11	13
12	13
13	15
14	15
15	19
16	19
17	19
18	19
19	21
20	21
21	22
22	27
23	27
24	27
25	27
26	27
27	28
28	31
29	31
30	31
31	39
32	39
33	39
34	39
35	39
36	39
37	39
38	39
39	40
40	43
41	43
42	43
43	45
44	45
45	46
46	55
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	57
56	57
57	58
58	63
59	63
60	63
61	63
62	63
63	64
64	67
65	67
66	67
67	79
68	79
69	79
70	79

cp's OEIS Frontend

A007448 Knuth's sequence (or Knuth numbers): a(n+1) = 1 + min( 2*a(floor(n/2)), 3*a(floor(n/3)) ).

Table of values

List of values

A007448 Knuth's sequence (or Knuth numbers): a(n+1) = 1 + min( 2a(floor(n/2)), 3a(floor(n/3)) ).

n	a(n)
0	1
1	3
2	3
3	4
4	7
5	7
6	7
7	9
8	9
9	10
10	13
11	13
12	13
13	15
14	15
15	19
16	19
17	19
18	19
19	21
20	21
21	22
22	27
23	27
24	27
25	27
26	27
27	28
28	31
29	31
30	31
31	39
32	39
33	39
34	39
35	39
36	39
37	39
38	39
39	40
40	43
41	43
42	43
43	45
44	45
45	46
46	55
47	55
48	55
49	55
50	55
51	55
52	55
53	55
54	55
55	57
56	57
57	58
58	63
59	63
60	63
61	63
62	63
63	64
64	67
65	67
66	67
67	79
68	79
69	79
70	79