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!)
A179474 a(n) = position of A045392(n) in A042997. 0
1, 8, 10, 18, 24, 29, 32, 37, 43, 56, 57, 61, 63, 67, 73, 74, 79, 84, 87, 100, 105, 110, 118, 125, 126, 130, 134, 143, 150, 157, 160, 165, 175, 177, 184, 185, 187, 188, 193, 200, 205, 215, 230, 233, 235, 242, 248, 256, 258, 261, 262, 265, 272, 276, 278, 279, 290 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Positions of primes congruent to {2} mod 7 among primes congruent to {2,3,4,5,6} mod 7.

LINKS

Table of n, a(n) for n=1..57.

MATHEMATICA

pr=Prime[Range[500]]; A042997=Select[pr, 1<Mod[ #, 7]&];

A045392=Select[A042997, 2==Mod[ #, 7]&];

s=Flatten[Position[A042997, # ]&/@A045392]

CROSSREFS

Cf. A042997 Primes congruent to {2, 3, 4, 5, 6} mod 7, A045392 Primes congruent to {2} mod 7.

Sequence in context: A299988 A143617 A015732 * A079347 A153382 A157911

Adjacent sequences:  A179471 A179472 A179473 * A179475 A179476 A179477

KEYWORD

nonn

AUTHOR

Zak Seidov, Jul 16 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 May 28 21:37 EDT 2020. Contains 334690 sequences. (Running on oeis4.)