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 A064742 Total number of primes (with multiplicity) dividing A064413(n). 5
 0, 1, 2, 2, 1, 2, 3, 3, 2, 1, 2, 3, 2, 1, 2, 4, 4, 3, 2, 1, 2, 3, 3, 2, 2, 3, 2, 1, 2, 4, 5, 2, 1, 2, 3, 2, 1, 2, 3, 4, 3, 2, 1, 2, 5, 3, 3, 4, 4, 2, 3, 4, 2, 2, 3, 2, 1, 2, 3, 2, 1, 2, 5, 6, 3, 2, 1, 2, 3, 3, 3, 5, 2, 1, 2, 4, 4, 2, 4, 2, 1, 2, 4, 2, 2, 4, 3, 2, 1, 2, 6, 3, 2, 4, 3, 3, 3, 5, 2, 1, 2, 3, 3, 5, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS J. C. Lagarias, E. M. Rains and N. J. A. Sloane, The EKG sequence, arXiv:math/0204011 [math.NT], 2002. J. C. Lagarias, E. M. Rains and N. J. A. Sloane, The EKG sequence, Exper. Math. 11 (2002), 437-446. MATHEMATICA terms = 105; ekg[s_] := Block[{m = s[[-1]], k = 3}, While[MemberQ[s, k] || GCD[m, k] == 1, k++]; Append[s, k]]; EKG = Nest[ekg, {1, 2}, terms-2]; PrimeOmega /@ EKG (* Jean-François Alcover, Sep 02 2018, after Robert G. Wilson v in A064413 *) CROSSREFS Sum of "digits" of A064743. Sequence in context: A319416 A284559 A284583 * A227185 A284579 A167489 Adjacent sequences:  A064739 A064740 A064741 * A064743 A064744 A064745 KEYWORD nonn AUTHOR N. J. A. Sloane, Oct 18 2001 EXTENSIONS More terms from Vladeta Jovovic, Oct 20 2001 STATUS approved

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Last modified February 21 18:45 EST 2019. Contains 320376 sequences. (Running on oeis4.)