A225430 - cp's OEIS frontend

A225430 a(n) is the smallest m for which there appears for the first time a prime p which equals odd part of sum of digits of m^2.

n	a(n)
1	4
2	7
3	8
4	17
5	43
6	83
7	167
8	314
9	707
10	836
11	6833
12	8167
13	21886
14	41833
15	89437
16	134164
17	947617
18	987917
19	3143167
20	3162083
21	9272917
22	24060133
23	60827617
24	434738887
25	529027313
26	2641873937
27	5383305583
28	14141757313

[4, 7, 8, 17, 43, 83, 167, 314, 707, 836, 6833, 8167, 21886, 41833, 89437, 134164, 947617, 987917, 3143167, 3162083, 9272917, 24060133, 60827617, 434738887, 529027313, 2641873937, 5383305583, 14141757313]

cp's OEIS Frontend

A225430 a(n) is the smallest m for which there appears for the first time a prime p which equals odd part of sum of digits of m^2.

Table of values

List of values