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 A162196 Sum of proper divisors minus the number of proper divisors of nonprime number A018252(n). 2
 0, 1, 3, 4, 2, 5, 11, 7, 6, 11, 16, 17, 8, 11, 29, 4, 13, 10, 23, 35, 26, 12, 17, 10, 47, 19, 14, 43, 47, 35, 28, 23, 67, 6, 38, 18, 41, 59, 14, 57, 20, 29, 97, 31, 36, 57, 16, 71, 53, 24, 67, 112, 37, 44, 59, 16, 83, 97, 36, 41, 129, 20, 43, 30 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Also, zero together with the positive integers of A152770. Note that the k-th positive integer of this sequence is equal to the sum of proper divisors minus the number of proper divisors of the composite number A002808(k). LINKS FORMULA a(n) = A152770(A018252(n)). a(n) = A001065(A018252(n)) - A032741(A018252(n)). MAPLE A162196 := proc(n)         A152770(A018252(n)) ; end proc: # R. J. Mathar, Sep 28 2011 CROSSREFS Cf. A001065, A018252, A002808, A032741, A152770, A152988, A152989, A152990, A162194, A162195. Sequence in context: A275848 A214929 A205152 * A179297 A133620 A154570 Adjacent sequences:  A162193 A162194 A162195 * A162197 A162198 A162199 KEYWORD easy,nonn AUTHOR Omar E. Pol, Jul 04 2009 STATUS approved

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