OFFSET
1,1
EXAMPLE
A(2)=97 because 97 is the 15th and last prime difference under 10^2.
MAPLE
A146758 := proc(n) local p: p:=10^n: do p:=prevprime(p): if(isprime(ceil(evalf(sqrt(p)))^2-p))then return p: fi: od: end: seq(A146758(n), n=1..14); # Nathaniel Johnston, Oct 01 2011
PROG
(UBASIC) 10 'sq less pr are prime 20 N=1:O=1:C=1 30 A=3:S=sqrt(N):if N>10^3 then print N, C-1:stop 40 B=N\A 50 if B*A=N then 100 60 A=A+2 70 if A<=S then 40 80 R=O^2:Q=R-N 90 if N<R and N=prmdiv(N) and Q=prmdiv(Q) then if Q>1 print R; N; Q; C:N=N+2:C=C+1:goto 30 100 N=N+2:if N<R then 30:else O=O+1:goto 80
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Enoch Haga, Nov 02 2008
EXTENSIONS
a(8)-a(18) from Nathaniel Johnston, Oct 01 2011
STATUS
approved