OFFSET
0,1
COMMENTS
a(20) > 2^20000 if it exists. - Robert Israel, Dec 24 2015
LINKS
Robert Israel, Table of n, a(n) for n = 0..19
EXAMPLE
a(5) = 17, smallest prime of the form 17 + 2^r ( r >3) is r = 13 and a(6)= 8209, a(6) - a(5) = 8192 = 2^13.
MAPLE
A[0]:= 2:
P:= [seq(2^i, i=0..10000)]:
for n from 1 do
for i from 1 to nops(P) do
if isprime(A[n-1]+P[i]) then
A[n]:= A[n-1]+P[i];
P:= subsop(i=NULL, P);
break
fi
od;
if not assigned(A[n]) then break fi;
od:
seq(A[i], i=0..n-1); # Robert Israel, Dec 24 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Sep 08 2003
EXTENSIONS
More terms from David Wasserman, May 12 2005
STATUS
approved