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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A175444 a(n)>a(n-1), a(n) = smallest prime such that a(n)+a(n-1) is multiple of m, a(1)=2, m=7. 1
2, 5, 23, 47, 79, 89, 107, 131, 149, 173, 191, 229, 233, 257, 317, 383, 401, 439, 443, 467, 499, 509, 541, 593, 653, 677, 709, 719, 751, 761, 821, 859, 863, 887, 919, 929, 947, 971, 1031, 1069, 1087, 1097, 1129, 1153, 1171, 1181, 1213, 1223, 1283, 1307 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

nxt[n_]:=Module[{sp=NextPrime[n]}, While[!Divisible[n+sp, 7], sp = NextPrime[ sp]]; sp]; NestList[nxt, 2, 50] (* Harvey P. Dale, Sep 26 2012 *)

CROSSREFS

Cf. A175451.

Sequence in context: A293213 A215278 A126975 * A233443 A156314 A308055

Adjacent sequences:  A175441 A175442 A175443 * A175445 A175446 A175447

KEYWORD

nonn

AUTHOR

Zak Seidov, May 28 2010

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 6 18:20 EDT 2020. Contains 336256 sequences. (Running on oeis4.)