A251559 a(n) = 2 more than the largest odd number among {A098550(1), A098550(2), ..., A098550(n)} which is neither a prime nor a term of A251542.

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

Offset

1,1

Links

Table of n, a(n) for n=1..70.

David L. Applegate, Hans Havermann, Bob Selcoe, Vladimir Shevelev, N. J. A. Sloane, and Reinhard Zumkeller, The Yellowstone Permutation, arXiv preprint arXiv:1501.01669 [math.NT], 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