login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A259315 Nonprimes containing no zeros in decimal representation. 2

%I #7 Jan 23 2022 07:30:41

%S 1,4,6,8,9,12,14,15,16,18,21,22,24,25,26,27,28,32,33,34,35,36,38,39,

%T 42,44,45,46,48,49,51,52,54,55,56,57,58,62,63,64,65,66,68,69,72,74,75,

%U 76,77,78,81,82,84,85,86,87,88,91,92,93,94,95,96,98,99,111

%N Nonprimes containing no zeros in decimal representation.

%C Intersection of A052382 and A018252;

%C A168046(a(n)) * (1 - A010051(a(n)) = 1.

%H Reinhard Zumkeller, <a href="/A259315/b259315.txt">Table of n, a(n) for n = 1..10000</a>

%o (Haskell)

%o a259315 n = a259315_list !! (n-1)

%o a259315_list = filter ((== 0) . a010051') a052382_list

%o (PARI) isok(m) = !isprime(m) && vecmin(digits(m)); \\ _Michel Marcus_, Jan 23 2022

%Y Cf. A010051, A018252, A052382, A168046, A038618.

%K nonn,base

%O 1,2

%A _Reinhard Zumkeller_, Jun 24 2015

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 14:32 EDT 2024. Contains 371960 sequences. (Running on oeis4.)