A113033 Beginning with 7, primes of the form: least multiple of the previous term followed by a 3. Beginning with 7, a(n) is the least prime of the form k*a(n-1)*10 +3.

7, 73, 733, 7333, 513313, 35931913, 1796595653, 35931913063, 3952510436933, 513826356801293, 143871379904362043, 1438713799043620433, 14387137990436204333, 2014199318661068606623

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Example

After 73 the next term is 733 = 73*10 + 3.

Mathematica

plm3[n_]:=Module[{k=1}, While[!PrimeQ[10k*n+3], k++]; 10k*n+3]; NestList[ plm3, 7, 15] (* Harvey P. Dale, Apr 04 2019 *)

Crossrefs

Sequence in context: A025592 A009142 A155614 * A093675 A121127 A376435

Adjacent sequences: A113030 A113031 A113032 * A113034 A113035 A113036

Keyword

base,nonn

Author

Amarnath Murthy, Jan 03 2006

Extensions

More terms from Joshua Zucker, Jan 11 2006

Status

approved