A309739 - cp's OEIS frontend

A309739 Primes of the form b10^(2k) + b*10^k + 1 for 1 <= b <= 9, k >= 0.

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	19
8	331
9	661
10	881
11	991
12	20201
13	60601
14	90901
15	2002001
16	5005001
17	300030001
18	600060001
19	50000500001
20	2000002000001
21	8000008000001
22	9000009000001
23	3000000003000000001
24	200000000020000000001
25	80000000000800000000001

[3, 5, 7, 11, 13, 17, 19, 331, 661, 881, 991, 20201, 60601, 90901, 2002001, 5005001, 300030001, 600060001, 50000500001, 2000002000001, 8000008000001, 9000009000001, 3000000003000000001, 200000000020000000001, 80000000000800000000001]

cp's OEIS Frontend

A309739 Primes of the form b10^(2k) + b*10^k + 1 for 1 <= b <= 9, k >= 0.

Table of values

List of values

cp's OEIS Frontend

A309739 Primes of the form b*10^(2*k) + b*10^k + 1 for 1 <= b <= 9, k >= 0.

Table of values

List of values

A309739 Primes of the form b10^(2k) + b*10^k + 1 for 1 <= b <= 9, k >= 0.