The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A260267 Primes that contain only digits in {1, 2, 4}. 7
 2, 11, 41, 211, 241, 421, 2111, 2141, 2221, 2411, 2441, 4111, 4211, 4241, 4421, 4441, 11411, 12211, 12241, 12421, 14221, 14411, 21121, 21211, 21221, 22111, 22441, 24121, 24421, 41141, 41221, 41411, 42221, 44111, 44221, 111121, 111211, 112111, 112121, 112241 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A020450 and A020452 are subsequences. All terms but the first one end with a digit "1". - M. F. Hasler, Jul 26 2015 LINKS MATHEMATICA Select[Prime[Range[3 10^4]], Complement[IntegerDigits[#], {1, 4, 2}]=={} &] PROG (MAGMA) [p: p in PrimesUpTo(4*10^5) | Set(Intseq(p)) subset [1, 4, 2]]; (PARI) A260267(n=50, show=0)={for(d=1, 1e9, my(t, u=vector(d, i, 10^(d-i))~); forvec(v=vector(d, i, [0, if(i

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

Last modified September 29 12:15 EDT 2020. Contains 337431 sequences. (Running on oeis4.)