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 A178094 a(1)=a(2)=1; thereafter a(n) = lpf(a(n-1)+a(n-2)), where lpf = "least prime factor". 2
 1, 1, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7, 2, 3, 5, 2, 7, 3, 2, 5, 7 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Cycles with a period of length 9. LINKS CROSSREFS Cf. A000045, A175723, A020639, A178095. Sequence in context: A272636 A066949 A073481 * A122556 A175723 A084346 Adjacent sequences:  A178091 A178092 A178093 * A178095 A178096 A178097 KEYWORD nonn AUTHOR N. J. A. Sloane, Dec 16 2010 STATUS approved

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Last modified January 20 16:46 EST 2019. Contains 319335 sequences. (Running on oeis4.)