A030155 - cp's OEIS frontend

A030155 Odd n such that in n^2 the parity of digits alternates.

n	a(n)
1	1
2	3
3	5
4	7
5	9
6	11
7	13
8	19
9	23
10	27
11	31
12	69
13	81
14	111
15	113
16	119
17	127
18	137
19	181
20	187
21	237
22	269
23	273
24	277
25	281
26	311
27	461
28	463
29	539
30	661
31	673
32	677
33	689
34	819
35	831
36	1019
37	1027
38	1111
39	1113
40	1119
41	1127
42	1137
43	1269
44	1277
45	1287
46	1361
47	1369
48	1377
49	1863
50	1969

[1, 3, 5, 7, 9, 11, 13, 19, 23, 27, 31, 69, 81, 111, 113, 119, 127, 137, 181, 187, 237, 269, 273, 277, 281, 311, 461, 463, 539, 661, 673, 677, 689, 819, 831, 1019, 1027, 1111, 1113, 1119, 1127, 1137, 1269, 1277, 1287, 1361, 1369, 1377, 1863, 1969]

cp's OEIS Frontend

A030155 Odd n such that in n^2 the parity of digits alternates.

Table of values

List of values