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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

For the partial sums of EKG sequence see A065057.

LINKS

Table of n, a(n) for n=1..60.

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-Fran├žois Alcover, Oct 04 2018, after Robert G. Wilson v *)

CROSSREFS

Cf. A065057, A098550, A250299, A253765, A253766.

Sequence in context: A075111 A080014 A132274 * A091714 A017991 A065614

Adjacent sequences:  A253765 A253766 A253767 * A253769 A253770 A253771

KEYWORD

nonn

AUTHOR

Omar E. Pol, Jan 27 2015

STATUS

approved

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Last modified May 26 17:40 EDT 2020. Contains 334630 sequences. (Running on oeis4.)