A277831 - cp's OEIS frontend

A277831 Number of '1' 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	1
2	5
3	57
4	689
5	8121
6	93553
7	1058985
8	11824417
9	130589849
10	1429355281
11	15528120716
12	167626886179
13	1799725651922
14	19231824420465
15	204663923217008
16	2170096022293551
17	22935528124170094
18	241700960254046637
19	2540466392663923180
20	26639231827873799724

[0, 1, 5, 57, 689, 8121, 93553, 1058985, 11824417, 130589849, 1429355281, 15528120716, 167626886179, 1799725651922, 19231824420465, 204663923217008, 2170096022293551, 22935528124170094, 241700960254046637, 2540466392663923180, 26639231827873799724]

cp's OEIS Frontend

A277831 Number of '1' 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