OFFSET
1,1
LINKS
Donovan Johnson, Table of n, a(n) for n = 1..100
EXAMPLE
17 follows 11 and 13 is not a term as tau(10) + tau(12) = tau(12) + tau(14) = 10.
MATHEMATICA
a = {}; t = 0; Do[p = Prime[n]; s = DivisorSigma[0, p - 1] + DivisorSigma[0, p + 1]; If[s > t, t = s; AppendTo[a, p]], {n, 1, 10^5}]; a (* Robert G. Wilson v, Dec 04 2003 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Dec 02 2003
EXTENSIONS
More terms from Robert G. Wilson v, Dec 04 2003
STATUS
approved