A225301 - cp's OEIS frontend

A225301 Number of solutions to rev(x^2) = rev(x)^2 with at most n digits, where the function rev(x) reverses the digits of x.

n	a(n)
1	4
2	10
3	25
4	64
5	154
6	363
7	820
8	1811
9	3873
10	8161
11	16682
12	33757
13	66865
14	130938
15	251983
16	480794
17	903982
18	1685564
19	3106009
20	5677864
21	10276936
22	18464659
23	32891188
24	58169965
25	102136773
26	178096365
27	308593320
28	531191385
29	909227947
30	1546356486
31	2617639293

[4, 10, 25, 64, 154, 363, 820, 1811, 3873, 8161, 16682, 33757, 66865, 130938, 251983, 480794, 903982, 1685564, 3106009, 5677864, 10276936, 18464659, 32891188, 58169965, 102136773, 178096365, 308593320, 531191385, 909227947, 1546356486, 2617639293]

cp's OEIS Frontend

A225301 Number of solutions to rev(x^2) = rev(x)^2 with at most n digits, where the function rev(x) reverses the digits of x.

Table of values

List of values