VOOZH about

URL: https://oeis.org/A253768

⇱ A253768 - OEIS


login
A253768
Partial sums of A098550.
3
1, 3, 6, 10, 19, 27, 42, 56, 61, 67, 92, 104, 139, 155, 162, 172, 193, 213, 240, 262, 301, 312, 325, 358, 384, 429, 457, 508, 540, 557, 575, 660, 684, 739, 773, 838, 874, 965, 995, 1044, 1082, 1145, 1164, 1206, 1301, 1345, 1402, 1442, 1511, 1561, 1584, 1632, 1747, 1799, 1874, 1920, 2001, 2057, 2144, 2206
OFFSET
1,2
COMMENTS
For the partial sums of EKG sequence see A065057.
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.
MATHEMATICA
f[lst_] := Block[{k = 4}, While[GCD[lst[[-2]], k] == 1 || GCD[lst[[-1]], k] > 1 || MemberQ[lst, k], k++]; Append[lst, k]];
Nest[f, {1, 2, 3}, 68] // Accumulate (* Jean-François Alcover, Oct 04 2018, after Robert G. Wilson v *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Jan 27 2015
STATUS
approved