login
A218345
Records in A218344.
1
1, 2, 3, 4, 5, 6, 12, 20, 30, 42, 46, 48, 84, 108, 114, 126, 130, 144, 166, 182, 192, 212, 246, 258, 270, 288, 294, 310, 406, 480, 494, 504, 534, 586
OFFSET
1,2
FORMULA
a(n) = A218344(A354740(n)). - Amiram Eldar, Jun 05 2022
MATHEMATICA
t = {1}; For[k = 6, k < 100000, k++, If[! PrimeQ[k], Mult = 1; While[! PrimeQ[k*Mult + 1], Mult = Mult + 1]; If[Mult > t[[-1]], AppendTo[t, Mult]]]]; t
CROSSREFS
Sequence in context: A177958 A032941 A273733 * A059460 A125141 A350211
KEYWORD
nonn,more
AUTHOR
William J. Keith, Oct 26 2012
EXTENSIONS
a(21)-a(34) from Amiram Eldar, Jun 05 2022
STATUS
approved