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A261149 a(n) = 515486946529943 + (n-1)*30526020494970. 1
515486946529943, 546012967024913, 576538987519883, 607065008014853, 637591028509823, 668117049004793, 698643069499763, 729169089994733, 759695110489703, 790221130984673, 820747151479643, 851273171974613, 881799192469583, 912325212964553, 942851233459523 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The terms n = 1..24 are prime. This is the longest known sequence of 24 primes in arithmetic progression with minimal end known as of August 10, 2015.
LINKS
Jens Kruse Andersen, All known AP24 to AP26.
FORMULA
a(n) = 515486946529943 + (n-1)*136831*A002110(9).
G.f.: -x*(484960926034973*x-515486946529943) / (x-1)^2. - Colin Barker, Aug 25 2015
EXAMPLE
a(24) = 515486946529943 + 23*30526020494970 = 1217585417914253 is prime.
MATHEMATICA
Table[515486946529943 + (n - 1) 30526020494970, {n, 1, 20}]
PROG
(Sage) [515486946529943+(n-1)*30526020494970 for n in (1..20)] #
(Magma) [515486946529943+(n-1)*30526020494970: n in [1..20]];
(PARI) Vec(-x*(484960926034973*x-515486946529943)/(x-1)^2 + O(x^40)) \\ Colin Barker, Aug 25 2015
CROSSREFS
Sequence in context: A172665 A172601 A086438 * A104873 A297450 A172585
KEYWORD
nonn,easy
AUTHOR
Marco Ripà, Aug 10 2015
STATUS
approved

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Last modified June 22 04:21 EDT 2024. Contains 373561 sequences. (Running on oeis4.)