OFFSET
2,2
FORMULA
a(n) = A000005(prime(n) - 2).
MATHEMATICA
DivisorSigma[0, #]&/@(Prime[Range[2, 110]]-2) (* Harvey P. Dale, Jan 11 2019 *)
PROG
(PARI) a(n) = numdiv(prime(n)-2); \\ Michel Marcus, May 14 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Offset corrected by Jon E. Schoenfield, May 13 2018
STATUS
approved