OFFSET
1,1
COMMENTS
Subsequence of A046387.
Aside from a(1) = 85085 = 5 (mod 30), all terms are congruent to 17 (mod 30), since a(k), k > 2 is a product m of the following residues (mod 30): {11, 13, 17, 19, 23}, and m mod 30 is congruent to 17.
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000
MATHEMATICA
Map[Times @@ NextPrime[#, Range[0, 4]] &, Select[Prime@ Range[2^16], AllTrue[{# + 2, # + 6, # + 8, # + 12}, PrimeQ] &]]
CROSSREFS
KEYWORD
nonn
AUTHOR
Michael De Vlieger, Aug 16 2024
STATUS
approved