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 A049238 a(n) is the number of divisors of prime(n) - 2. 0
 1, 2, 2, 3, 2, 4, 2, 4, 4, 2, 4, 4, 2, 6, 4, 4, 2, 4, 4, 2, 4, 5, 4, 4, 6, 2, 8, 2, 4, 4, 4, 8, 2, 6, 2, 4, 4, 8, 6, 4, 2, 8, 2, 8, 2, 4, 4, 9, 2, 8, 4, 2, 4, 8, 6, 4, 2, 6, 6, 2, 4, 4, 4, 2, 12, 4, 4, 8, 2, 8, 8, 4, 4, 4, 4, 6, 4, 8, 4, 4, 2, 8, 2, 4, 9, 4, 8, 8, 2, 8, 6, 4, 4, 4, 4, 6, 4, 2, 6, 4, 8, 8, 10 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,2 LINKS FORMULA a(n) = A000005(prime(n) - 2). EXAMPLE prime(23)=83, so a(23) = A000005(83-2) = A000005(81) = 5. 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 Sequence in context: A326641 A144372 A182861 * A001616 A257599 A218702 Adjacent sequences:  A049235 A049236 A049237 * A049239 A049240 A049241 KEYWORD nonn AUTHOR EXTENSIONS Offset corrected by Jon E. Schoenfield, May 13 2018 STATUS approved

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Last modified May 8 20:32 EDT 2021. Contains 343668 sequences. (Running on oeis4.)