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 A251559 a(n) = 2 more than the largest odd number among {A098550(1), A098550(2), ..., A098550(n)} which is neither a prime nor a member of A251542. 4
 9, 9, 9, 9, 15, 15, 21, 21, 21, 21, 21, 21, 39, 39, 39, 39, 39, 39, 39, 39, 45, 45, 45, 45, 45, 49, 49, 55, 55, 55, 55, 55, 55, 57, 57, 69, 69, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 99, 99, 105, 105, 105, 105, 121 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS David L. Applegate, Hans Havermann, Bob Selcoe, Vladimir Shevelev, N. J. A. Sloane, and Reinhard Zumkeller, The Yellowstone Permutation, arXiv preprint arXiv:1501.01669, 2015 and J. Int. Seq. 18 (2015) 15.6.7. CROSSREFS Cf. A098550, A251546, A251557, A251558. Sequence in context: A286833 A216852 A251558 * A068395 A245429 A242893 Adjacent sequences:  A251556 A251557 A251558 * A251560 A251561 A251562 KEYWORD nonn AUTHOR N. J. A. Sloane, Dec 23 2014 STATUS approved

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Last modified December 14 19:27 EST 2019. Contains 329987 sequences. (Running on oeis4.)