OFFSET
1,1
COMMENTS
For n >= 3 digital roots of terms appear to be equal 9, which means terms are divisible by 9. - Alexander R. Povolotsky, Jun 17 2012
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..445
MATHEMATICA
Table[n! (Prime[n+1] + Prime[n])/(Prime[n+1] - Prime[n]), {n, 20}] (* T. D. Noe, Jan 18 2012 *)
PROG
(PARI) for(n=1, 25, print1(n! * (prime(n+1) + prime(n)) / (prime(n+1) - prime(n)), ", ")) \\ G. C. Greubel, Feb 25 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Alexander R. Povolotsky, Jan 18 2012
STATUS
approved