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

1,1

Comments

The first 10 members are palindromes A002113.

Links

Table of n, a(n) for n=1..16.

Example

.
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.

Sequence in context: A112893 A086855 A089182 * A322283 A151617 A334603

Adjacent sequences: A138137 A138138 A138139 * A138141 A138142 A138143

Keyword

easy,nonn,base

Author

Omar E. Pol, Mar 09 2008

Status

approved