A251547 A251546(n)/2.

1, 2, 2, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 12, 12, 15, 15, 15, 15, 15, 15, 19, 19, 20, 20, 20, 20, 20, 20, 20, 23, 23, 23, 23, 23, 23, 23, 23, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27

Offset: 1

Author

N. J. A. Sloane, Dec 18 2014

Keywords

• nonn

Links

• Chai Wah Wu, Table of n, a(n) for n = 1..10000
• 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, A247253, A251416, A251417, A251546-A251552.

Programs

Haskell

a251547 = flip div 2 . a251546  -- Reinhard Zumkeller, Dec 19 2014