OFFSET
1,1
LINKS
Harry J. Smith, Table of n, a(n) for n = 1..1000
EXAMPLE
269 belong to the sequence because |2 - 6 - 9| = |-13| = 13.
MATHEMATICA
okQ[n_] := Module[{idn = -1# & /@ IntegerDigits[n]}, PrimeQ[Plus @@ Rest[idn] - First[idn]]]; Select[Prime[Range[120]], okQ]
PROG
(PARI) SubD(x)= { local(s); s=0; while (x>9, s+=x-10*(x\10); x\=10); return(abs(s - x)) }
{ n=0; p=0; for (m=1, 10^9, p=nextprime(p+1); if(isprime(SubD(p)), write("b063792.txt", n++, " ", p); if (n==1000, break)) ) } \\ Harry J. Smith, Aug 31 2009
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Felice Russo, Aug 17 2001
EXTENSIONS
Corrected by Harvey P. Dale, Aug 20 2001
STATUS
approved