A000916 - cp's OEIS frontend

A000916 a(2n) = n+2, a(2n-1) = smallest number requiring n+2 letters in English.

n	a(n)
1	1
2	3
3	4
4	4
5	3
6	5
7	11
8	6
9	15
10	7
11	13
12	8
13	17
14	9
15	24
16	10
17	23
18	11
19	73
20	12
21	3000
22	13
23	11000
24	14
25	15000
26	15
27	101
28	16
29	104
30	17
31	103
32	18
33	111
34	19
35	115
36	20
37	113
38	21
39	117
40	22
41	124
42	23
43	123
44	24
45	173
46	25
47	323
48	26
49	373
50	27
51	1104
52	28
53	1103
54	29
55	1111
56	30

[1, 3, 4, 4, 3, 5, 11, 6, 15, 7, 13, 8, 17, 9, 24, 10, 23, 11, 73, 12, 3000, 13, 11000, 14, 15000, 15, 101, 16, 104, 17, 103, 18, 111, 19, 115, 20, 113, 21, 117, 22, 124, 23, 123, 24, 173, 25, 323, 26, 373, 27, 1104, 28, 1103, 29, 1111, 30]

cp's OEIS Frontend

A000916 a(2n) = n+2, a(2n-1) = smallest number requiring n+2 letters in English.

Table of values

List of values