A138140 Concatenation of terms of n-th row of the triangle of primes A138139.

2, 22, 232, 2332, 23532, 235532, 2357532, 23577532, 2357117532, 235711117532, 23571113117532, 2357111313117532, 235711131713117532, 23571113171713117532, 2357111317191713117532, 235711131719191713117532

Offset: 1

Author

Omar E. Pol, Mar 09 2008

Keywords

• easy
• nonn
• base

Comments

The first 10 members are palindromes A002113.

Examples

			.
n ... a(n)
1 ... 2
2 ... 22
3 ... 232
4 ... 2332
5 ... 23532
6 ... 235532
7 ... 2357532
8 ... 23577532
9 ... 2357117532
10 .. 235711117532
11 .. 23571113117532
		

Crossrefs

Cf. A000040, A089182, A138139.