A277835 - cp's OEIS frontend

A277835 Number of '5' digits in the set of all numbers from 0 to A014824(n) = Sum_{i=1..n} i*10^(n-i) = (0, 1, 12, 123, 1234, 12345, ...).

n	a(n)
0	0
1	0
2	1
3	22
4	343
5	4665
6	58993
7	713385
8	8368417
9	96029849
10	1083755281
11	12072120713
12	133066886145
13	1454125651577
14	15775824417009
15	170103923182448
16	1824496021947951
17	19479528120714094
18	207140960219486637
19	2194866392318323180
20	23183231824417799723

[0, 0, 1, 22, 343, 4665, 58993, 713385, 8368417, 96029849, 1083755281, 12072120713, 133066886145, 1454125651577, 15775824417009, 170103923182448, 1824496021947951, 19479528120714094, 207140960219486637, 2194866392318323180, 23183231824417799723]

cp's OEIS Frontend

A277835 Number of '5' digits in the set of all numbers from 0 to A014824(n) = Sum_{i=1..n} i*10^(n-i) = (0, 1, 12, 123, 1234, 12345, ...).

Table of values

List of values