login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A053583 a(n+1) is the smallest prime ending with (but not equal to) a(n), where a(1)=3. 7
3, 13, 113, 2113, 12113, 612113, 11612113, 1611612113, 111611612113, 1111611612113, 81111611612113, 2181111611612113, 132181111611612113, 11132181111611612113, 3411132181111611612113, 413411132181111611612113 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..210

MAPLE

A[1]:= 3;

for n from 2 to 100 do

d:= 10^(ilog10(A[n-1])+1);

for k from 1 do

  p:= A[n-1]+d*k;

  if isprime(p) then

    A[n]:= p;

    break

  fi

od

od:

seq(A[n], n=1..100); # Robert Israel, Jul 15 2014

CROSSREFS

Cf. A000040.

Sequence in context: A063269 A105431 A062447 * A077713 A119723 A093011

Adjacent sequences:  A053580 A053581 A053582 * A053584 A053585 A053586

KEYWORD

base,nonn

AUTHOR

G. L. Honaker, Jr., Jan 18 2000

EXTENSIONS

Definition corrected by Robert Israel, Jul 15 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 16 07:41 EST 2017. Contains 296076 sequences.