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A065057 Partial sums of A064413. 4
0, 1, 3, 7, 13, 16, 25, 37, 45, 55, 60, 75, 93, 107, 114, 135, 159, 175, 195, 217, 228, 261, 288, 318, 343, 378, 406, 432, 445, 484, 520, 552, 586, 603, 654, 696, 734, 753, 810, 855, 895, 939, 985, 1008, 1077, 1125, 1175, 1227, 1281, 1337, 1386 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..50.

J. C. Lagarias, E. M. Rains and N. J. A. Sloane, The EKG sequence, arXiv:math/0204011 [math.NT], 2002.

J. C. Lagarias, E. M. Rains and N. J. A. Sloane, The EKG sequence, Exper. Math. 11 (2002), 437-446.

Index entries for sequences related to EKG sequence

MATHEMATICA

terms = 50;

ekg[s_] := Block[{m = s[[-1]], k = 3}, While[MemberQ[s, k] || GCD[m, k] == 1, k++]; Append[s, k]];

EKG = Nest[ekg, {1, 2}, terms-2];

Prepend[Accumulate[EKG], 0] (* Jean-François Alcover, Sep 02 2018, after Robert G. Wilson v in A064413 *)

CROSSREFS

Sequence in context: A192148 A151875 A117533 * A100807 A290400 A040999

Adjacent sequences:  A065054 A065055 A065056 * A065058 A065059 A065060

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 07 2001

STATUS

approved

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Last modified October 18 10:45 EDT 2018. Contains 316321 sequences. (Running on oeis4.)