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 A169843 EKG sequence started at 6 instead of 2. 13
 6, 2, 4, 8, 10, 5, 15, 3, 9, 12, 14, 7, 21, 18, 16, 20, 22, 11, 33, 24, 26, 13, 39, 27, 30, 25, 35, 28, 32, 34, 17, 51, 36, 38, 19, 57, 42, 40, 44, 46, 23, 69, 45, 48, 50, 52, 54, 56, 49, 63, 60, 55, 65, 70, 58, 29, 87, 66, 62, 31, 93, 72, 64, 68, 74, 37, 111, 75, 78, 76, 80, 82, 41 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A generalization of A064413. LINKS Peter Kagey, Table of n, a(n) for n = 1..10000 Eric Weisstein's World of Mathematics, EKG Sequence MATHEMATICA f[s_List] := Block[{m = s[[-1]], k = 3}, While[MemberQ[s, k] || GCD[m, k] == 1, k++]; Append[s, k]]; Nest[f, {6, 2}, 71] (* Michael De Vlieger, Jan 21 2016, after Robert G. Wilson v at A064413 *) CROSSREFS For other initial terms, see A064413, A169837, A169839, A169841, A169845, A169847, A169849, A169851, A169853, A169855. Sequence in context: A156590 A135617 A019930 * A123139 A027599 A248272 Adjacent sequences:  A169840 A169841 A169842 * A169844 A169845 A169846 KEYWORD nonn AUTHOR T. D. Noe and N. J. A. Sloane, Jun 02 2010 STATUS approved

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Last modified October 16 12:52 EDT 2019. Contains 328060 sequences. (Running on oeis4.)