A126639 - cp's OEIS frontend

A126639 a(n) is the number of integers k less than 10^n such that the decimal representation of k lacks the digit 1,2,3, at least one of digits 4,5,6 and at least one of digits 7,8,9.

n	a(n)
1	7
2	49
3	331
4	2137
5	13147
6	77449
7	440251
8	2432857
9	13151707
10	69895849
11	366600571
12	1903222777
13	9802234267
14	50171448649
15	255545887291
16	1296626911897
17	6559153748827
18	33101134543849
19	166731005404411
20	838567970940217
21	4212526479343387
22	21141483461069449

[7, 49, 331, 2137, 13147, 77449, 440251, 2432857, 13151707, 69895849, 366600571, 1903222777, 9802234267, 50171448649, 255545887291, 1296626911897, 6559153748827, 33101134543849, 166731005404411, 838567970940217, 4212526479343387, 21141483461069449]

cp's OEIS Frontend

A126639 a(n) is the number of integers k less than 10^n such that the decimal representation of k lacks the digit 1,2,3, at least one of digits 4,5,6 and at least one of digits 7,8,9.

Table of values

List of values