OFFSET
1,1
COMMENTS
Corresponding primes are: 29, 31, 79, 1753, 21529, 623669, 2229272062349, ...
a(29) > 50000.
Terms > 29 correspond to probable primes.
LINKS
Henri & Renaud Lifchitz, PRP Records. Search for n!6+24.
Joe McLean, Interesting Sources of Probable Primes
OpenPFGW Project, Primality Tester
EXAMPLE
11!6 + 24 = 11*5 + 24 = 79 is prime, so 11 is in the sequence.
MATHEMATICA
MultiFactorial[n_, k_] := If[n < 1, 1, n*MultiFactorial[n - k, k]];
Select[Range[0, 50000], PrimeQ[MultiFactorial[#, 6] + 24] &]
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robert Price, Jun 09 2017
STATUS
approved