A262662 - OEIS

A262662

Base-10 representation of 1 and the primes at A262661.

1, 73, 397921, 1367644241, 299767396606721, 90081358266396705673, 572449184873406814806649, 241691401643304337894510228163, 1070153549095058339670505721475283, 9539239297109609328178537670671873231, 582002984818031754009910745491662885723817

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OFFSET

1,2

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..300

EXAMPLE

n A262661(n) base-10 representation

1 1 0

2 111 73

3 1411141 397921

MATHEMATICA

s = {1}; base = 8; z = 20; Do[NestWhile[# + 1 &, 1, ! PrimeQ[tmp = FromDigits[Join[#, IntegerDigits[Last[s]], Reverse[#]] &[IntegerDigits[#, base]], base]] &];

AppendTo[s, FromDigits[IntegerDigits[tmp, base]]], {z}]; s (* A262661 *)

Map[FromDigits[ToString[#], base] &, s] (* A262662 *)

(* Peter J. C. Moses, Sep 01 2015 *)

CROSSREFS

Cf. A262661.

Sequence in context: A183490 A232307 A232457 * A291991 A188957 A159438

Adjacent sequences: A262659 A262660 A262661 * A262663 A262664 A262665

KEYWORD

nonn,easy,base

AUTHOR

Clark Kimberling, Oct 31 2015

STATUS

approved