A069628 - cp's OEIS frontend

A069628 a(1) = 1; 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	1
2	11
3	211
4	2111
5	22111
6	2211109
7	92211109
8	9221110901
9	29221110901
10	2922111090137
11	32922111090137
12	3292211109013747
13	73292211109013747
14	7329221110901374771
15	157329221110901374771
16	15732922111090137477101

[1, 11, 211, 2111, 22111, 2211109, 92211109, 9221110901, 29221110901, 2922111090137, 32922111090137, 3292211109013747, 73292211109013747, 7329221110901374771, 157329221110901374771, 15732922111090137477101]

cp's OEIS Frontend

A069628 a(1) = 1; 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