A088180 - cp's OEIS frontend

A088180 a(n) is the number of numbers m < 10^n for which there is at least one k such that k + reverse(k) = m.

n	a(n)
0	1
1	5
2	19
3	112
4	368
5	2161
6	7033
7	41140
8	133730
9	781884
10	2541197
11	14856466
12	48283738
13	282274893
14	917394087
15	5363229225
16	17430497086
17	101901374524
18	331179473681
19	1936126175213
20	6292410089388
21	36786397511512
22	119555791973835
23	698941553280624
24	2271560048351176

[1, 5, 19, 112, 368, 2161, 7033, 41140, 133730, 781884, 2541197, 14856466, 48283738, 282274893, 917394087, 5363229225, 17430497086, 101901374524, 331179473681, 1936126175213, 6292410089388, 36786397511512, 119555791973835, 698941553280624, 2271560048351176]

cp's OEIS Frontend

A088180 a(n) is the number of numbers m < 10^n for which there is at least one k such that k + reverse(k) = m.

Table of values

List of values