A113054 Beginning with 61, primes of the form: least multiple of the previous term followed by a 1. Beginning with 61, a(n) is the least prime of the form k*a(n-1)*10 +1.

61, 1831, 18311, 366221, 21973261, 5273582641, 52735826411, 1054716528221, 158207479233151, 11074523546320571, 1661178531948085651, 249176779792212847651, 92195408523118753630871

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..300

Mathematica

lmpt[n_]:=Module[{k=1}, While[!PrimeQ[k*n*10+1], k++]; k*n*10+1]; NestList[ lmpt, 61, 20] (* Harvey P. Dale, Aug 27 2016 *)

Crossrefs

Sequence in context: A229667 A242382 A017777 * A017724 A009841 A038650

Adjacent sequences: A113051 A113052 A113053 * A113055 A113056 A113057

Keyword

base,nonn

Author

Amarnath Murthy, Jan 03 2006

Extensions

More terms from Joshua Zucker, Jan 11 2006

Status

approved