A358985 - cp's OEIS frontend

A358985 a(n) is the number of numbers of the form k + reverse(k) for at least one n-digit number k.

n	a(n)
1	10
2	18
3	180
4	342
5	3420
6	6498
7	64980
8	123462
9	1234620
10	2345778
11	23457780
12	44569782
13	445697820
14	846825858
15	8468258580
16	16089691302
17	160896913020
18	305704134738
19	3057041347380
20	5808378560022
21	58083785600220
22	110359192640418
23	1103591926404180
24	2096824660167942

[10, 18, 180, 342, 3420, 6498, 64980, 123462, 1234620, 2345778, 23457780, 44569782, 445697820, 846825858, 8468258580, 16089691302, 160896913020, 305704134738, 3057041347380, 5808378560022, 58083785600220, 110359192640418, 1103591926404180, 2096824660167942]

cp's OEIS Frontend

A358985 a(n) is the number of numbers of the form k + reverse(k) for at least one n-digit number k.

Table of values

List of values