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A103859 Number of divisors of prime(n)! - prime(n)# + 1. 3
1, 1, 4, 2, 4, 4, 4, 4, 16, 4, 8, 16, 16, 32, 32, 8, 32, 8, 16, 64, 32, 16, 32, 64, 512, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
Reinhard Zumkeller, p(n)!-p(n )#+1
FORMULA
a(n) = A000005(A103855(n)).
PROG
(PARI) a(n) = numdiv(prime(n)! - prod(k=1, n, prime(k)) + 1); \\ Michel Marcus, Nov 06 2022
CROSSREFS
Sequence in context: A135282 A347409 A179411 * A253808 A346171 A007400
KEYWORD
nonn,more
AUTHOR
Reinhard Zumkeller, Feb 20 2005
STATUS
approved

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)