login
A288718
Primes of the form k!5+1, where k!5 is the quintuple factorial number (A085157).
1
2, 3, 5, 7, 37, 67, 313, 751, 2857, 129169, 576577, 17873857, 54286849, 393750001, 643458817, 19053977918977, 206180145819649, 11716249122484566383298871297, 177636555893291390456871518209, 49055724379818682505120501943238657
OFFSET
1,1
LINKS
MATHEMATICA
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 5] + 1, {i, 0, 100}], PrimeQ[#]&]
CROSSREFS
Cf. A085148.
Sequence in context: A090912 A048416 A048401 * A289861 A160748 A117639
KEYWORD
nonn
AUTHOR
Robert Price, Jun 13 2017
STATUS
approved