A069630 - cp's OEIS frontend

A069630 a(1) = 3; a(2n) = smallest prime starting (most significant digits) with a(2n-1). a(2n+1) = smallest prime ending (least significant digits)in a(2n).

n	a(n)
1	3
2	31
3	131
4	1319
5	21319
6	213193
7	12213193
8	122131939
9	1122131939
10	112213193909
11	17112213193909
12	171122131939093
13	18171122131939093
14	1817112213193909339
15	61817112213193909339
16	618171122131939093397
17	60618171122131939093397

[3, 31, 131, 1319, 21319, 213193, 12213193, 122131939, 1122131939, 112213193909, 17112213193909, 171122131939093, 18171122131939093, 1817112213193909339, 61817112213193909339, 618171122131939093397, 60618171122131939093397]

cp's OEIS Frontend

A069630 a(1) = 3; a(2n) = smallest prime starting (most significant digits) with a(2n-1). a(2n+1) = smallest prime ending (least significant digits)in a(2n).

Table of values

List of values