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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A123085 Table read by rows: rows give successive prime sextets of form k, k+30, k+60, k+90, k+120, k+150. 1
 7, 37, 67, 97, 127, 157, 107, 137, 167, 197, 227, 257, 359, 389, 419, 449, 479, 509, 541, 571, 601, 631, 661, 691, 2221, 2251, 2281, 2311, 2341, 2371, 6673, 6703, 6733, 6763, 6793, 6823, 7457, 7487, 7517, 7547, 7577, 7607, 10103, 10133, 10163, 10193, 10223, 10253 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 Krishna Alladi, The Green-Tao theorem resolves an important special case of the Erdos-Turan conjecture, The Hindu, December 25 2006. EXAMPLE Table starts: 7, 37, 67, 97, 127, 157; 107, 137, 167, 197, 227, 257; 359, 389, 419, 449, 479, 509; ... MAPLE i:=1:for k from 1 to 30000 do if isprime(k) and isprime(k+30)and isprime(k+60) and isprime(k+90) and isprime(k+120)and isprime(k+150) then a[i]:=k: a[i+1]:=k+30:a[i+2]:=k+60:a[i+3]:=k+90:a[i+4]:=k+120:a[i+5]:=k+150:i:=i+6 fi od: seq(a[n], n=1..i-1); MATHEMATICA Select[#+{0, 30, 60, 90, 120, 150}&/@Prime[Range[1500]], AllTrue[#, PrimeQ]&]//Flatten (* Harvey P. Dale, Sep 05 2023 *) CROSSREFS Cf. A001097, A156204 (first column). Sequence in context: A104914 A032588 A123084 * A128471 A168003 A132231 Adjacent sequences: A123082 A123083 A123084 * A123086 A123087 A123088 KEYWORD nonn,tabf AUTHOR Miklos Kristof, Sep 27 2006 STATUS approved

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.

Last modified July 18 21:02 EDT 2024. Contains 374388 sequences. (Running on oeis4.)