OFFSET
1,1
EXAMPLE
Resulting semiprimes are:
{10,55,119,515,5267,116627},
{57,121,517,5269,116629},
{166,562,5314,116674},
{626,5378,116738},
{5774,117134},
{121886}.
MATHEMATICA
spQ[n_] := Plus @@ Last /@ FactorInteger[n] == 2; L = {0, 4}; Do[n = L[[-1]] + 1; While[! AllTrue[n + L, spQ], n++]; AppendTo[L, n], {9}]; Rest@ L (* Giovanni Resta, Jun 13 2018 *)
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Zak Seidov, Feb 21 2006
EXTENSIONS
Three more terms from R. J. Mathar, Jan 23 2008
a(11)-a(12) from Donovan Johnson, Nov 11 2008
a(13) from Donovan Johnson, Jul 22 2011
a(14) from Giovanni Resta, Jun 13 2018
a(15) from Giovanni Resta, Jun 14 2018
STATUS
approved