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 A110841 a(n) is the number of prime factors, with multiplicity, of abs(A014509(n)). 0
 0, 0, 0, 0, 0, 0, 0, 0, 1, 4, 2, 7, 7, 2, 2, 4, 3, 3, 7, 1, 6, 4, 5, 14, 4, 9, 5, 10, 3, 11, 2, 5, 3, 7, 11, 5, 3, 4, 15, 6, 5, 19, 10, 6, 13, 15, 5, 10, 5, 5, 6, 7, 5, 15, 7, 5, 2, 13, 4, 3, 10, 5, 9, 7, 5, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,10 LINKS Table of n, a(n) for n=0..65. FORMULA a(n) = A001222(abs(A014509(n))). EXAMPLE a(10) = 2 because A014509(10) = 529 = 23^2. a(8) = a(19) = 1 since A014509(8) and A014509(19) are prime. PROG (PARI) a(n) = my(b=bernfrac(2*n), c=floor(abs(b))*sign(b)); if (c==0, 0, bigomega(c)); \\ Michel Marcus, Mar 29 2020 CROSSREFS Cf. A001222, A073276, A075178, A076547, A076549, A079294, A083687, A084217, A085092, A085737, A089170, A089644, A089655. Sequence in context: A092314 A237750 A249652 * A128226 A049817 A203575 Adjacent sequences: A110838 A110839 A110840 * A110842 A110843 A110844 KEYWORD nonn,less,more AUTHOR Jonathan Vos Post, Sep 16 2005 EXTENSIONS More terms from Michel Marcus, Mar 29 2020 a(51)-a(65) from Jinyuan Wang, Apr 02 2020 STATUS approved

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Last modified November 29 13:27 EST 2023. Contains 367445 sequences. (Running on oeis4.)