A263619 - cp's OEIS frontend

A263619 Number of palindromic squares with at most n digits.

n	a(n)
1	4
2	4
3	7
4	7
5	14
6	15
7	20
8	20
9	31
10	31
11	36
12	37
13	56
14	56
15	69
16	70
17	95
18	95
19	113
20	113
21	161
22	162
23	193
24	193
25	263
26	264
27	308
28	310
29	415
30	415
31	485
32	486
33	639
34	640
35	738
36	741
37	950
38	950
39	1082
40	1082
41	1373
42	1374
43	1555
44	1556
45	1940
46	1940
47	2174
48	2176
49	2672
50	2673
51	2974
52	2975
53	3611
54	3611
55	3994
56	3994
57	4792
58	4793
59	5267
60	5268
61	6249
62	6249
63	6827
64	6827
65	8026
66	8028
67	8729

[4, 4, 7, 7, 14, 15, 20, 20, 31, 31, 36, 37, 56, 56, 69, 70, 95, 95, 113, 113, 161, 162, 193, 193, 263, 264, 308, 310, 415, 415, 485, 486, 639, 640, 738, 741, 950, 950, 1082, 1082, 1373, 1374, 1555, 1556, 1940, 1940, 2174, 2176, 2672, 2673, 2974, 2975, 3611, 3611, 3994, 3994, 4792, 4793, 5267, 5268, 6249, 6249, 6827, 6827, 8026, 8028, 8729]

cp's OEIS Frontend

A263619 Number of palindromic squares with at most n digits.

Table of values

List of values