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A262654 Base-10 representation of 4 and the primes at A262653. 3
4, 61, 1663, 243263, 9857663, 3982846453, 122168020854499, 772191321163986959, 235380054470968985242897, 390489415238382125919557233, 2056313729049707794675149973499, 18249666491214590662011175235075053, 4157609603822695440999128471752421052593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

n   A262653(n)    base-10 representation

1     4                  4

2     141                61

3     11411              1663

MATHEMATICA

s = {4}; base = 6; 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  (* A262653 *)

Map[FromDigits[ToString[#], base] &, s]  (* A262654 *)

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

CROSSREFS

Cf. A262653.

Sequence in context: A132064 A229666 A252973 * A218472 A304176 A326225

Adjacent sequences:  A262651 A262652 A262653 * A262655 A262656 A262657

KEYWORD

nonn,easy,base

AUTHOR

Clark Kimberling, Oct 27 2015

STATUS

approved

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Last modified October 26 02:14 EDT 2021. Contains 348256 sequences. (Running on oeis4.)