The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A013918 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A013918

Primes equal to the sum of the first k primes for some k.
(history; published version)

#46 by Joerg Arndt at Thu Feb 08 07:10:57 EST 2024

STATUS

editing

approved

#45 by Paolo P. Lava at Thu Feb 08 06:26:39 EST 2024

MAPLE

P:=proc(n) local i, j; j:=2; for i from 2 by 1 to n do j:=j+ithprime(i); if isprime(j) then print(j); fi; od; end: P(1000); # Paolo P. Lava, May 05 2006

STATUS

approved

editing

#44 by Susanna Cuyler at Sat Feb 01 14:35:57 EST 2020

STATUS

proposed

approved

#43 by Michel Marcus at Sat Feb 01 12:14:02 EST 2020

STATUS

editing

proposed

#42 by Michel Marcus at Sat Feb 01 12:13:59 EST 2020

FORMULA

a(n) = A007504(A013916(n)).

STATUS

approved

editing

#41 by Susanna Cuyler at Wed Jul 11 20:11:29 EDT 2018

STATUS

proposed

approved

#40 by Michael De Vlieger at Wed Jul 11 18:28:25 EDT 2018

STATUS

editing

proposed

#39 by Michael De Vlieger at Wed Jul 11 18:28:22 EDT 2018

LINKS

Romeo Meštrović, <a href="https://arxiv.org/abs/1804.04198">Curious conjectures on the distribution of primes among the sums of the first 2n primes</a>, arXiv:1804.04198 [math.NT], 2018.

STATUS

approved

editing

#38 by Reinhard Zumkeller at Mon Feb 09 13:21:59 EST 2015

STATUS

editing

approved

#37 by Reinhard Zumkeller at Mon Feb 09 12:35:29 EST 2015

PROG

(Haskell)

a013918 n = a013918_list !! (n-1)

a013918_list = filter ((== 1) . a010051) a007504_list

-- Reinhard Zumkeller, Feb 09 2015

CROSSREFS

Cf. A007504, A010051, A000040.

STATUS

approved

editing