OFFSET
1,1
COMMENTS
This sequence agrees with A109043 for 0<n<=65; what about all larger n?
For a guide to related sequences, see A204892.
Sequence agrees with A109043 at least up to 6400. - Michel Marcus, Mar 14 2018
If Polignac's conjecture is true, then this is a duplicate of A109043. - Robert Israel, Mar 14 2018
LINKS
EXAMPLE
1 = (5-3)/2=(7-3)/4=(13-3)/6=(11-3)/8=...
2 = (5-3)/1=(11-5)/3=(7-3)/5=(17-3)/7=...
MATHEMATICA
(See the program at A204900.)
PROG
(PARI) a(n) = {forprime(p=5, , forprime(q=3, p-1, d = p-q; if ((d % n) == 0, return (d)); ); ); } \\ Michel Marcus, Mar 14 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 20 2012
STATUS
approved