

A369000


a(n) is the number of integers, not semiprimes, whose arithmetic derivative is equal to the nth primorial.


7



0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 2, 9, 18
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OFFSET

1,11


COMMENTS



LINKS



FORMULA



PROG

(PARI) \\ See the attached PARIprogram.


CROSSREFS



KEYWORD

nonn,hard,more


AUTHOR



STATUS

approved



