OFFSET
1,1
EXAMPLE
a(3)=1555 is a term because 1555 is the smallest semiprime ending in exactly three 5's.
MATHEMATICA
ssp[n_]:=Module[{k=0, c=FromDigits[Table[5, {n}]]}, While[PrimeOmega[ k*10^n+ c]!=2, k++]; k*10^n+c]; Array[ssp, 20] (* Harvey P. Dale, Mar 29 2015 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Shyam Sunder Gupta, May 12 2005
STATUS
approved