A064740 Smallest controlling prime when A064413(n) is computed.

2, 2, 2, 3, 3, 3, 2, 2, 5, 5, 3, 2, 7, 7, 3, 2, 2, 2, 11, 11, 3, 3, 5, 5, 7, 2, 13, 13, 3, 2, 2, 17, 17, 3, 2, 19, 19, 3, 5, 2, 2, 23, 23, 3, 2, 2, 2, 2, 7, 7, 3, 5, 5, 5, 2, 29, 29, 3, 2, 31, 31, 3, 2, 2, 2, 37, 37, 3, 3, 2, 2, 2, 41, 41, 3, 3, 7, 11, 2, 43, 43, 3, 5, 5, 5, 2, 2, 47, 47, 3, 2, 7

Offset

2,1

Links

Michael De Vlieger, Table of n, a(n) for n = 2..10000

Michael De Vlieger, Mathematica code based on Lagarias-Rains-Sloane 2002, efficiently generates this sequence.

J. C. Lagarias, E. M. Rains and N. J. A. Sloane, The EKG sequence, Exper. Math. 11 (2002), 437-446; arXiv:math/0204011 [math.NT], 2002.

Index entries for sequences related to EKG sequence

Formula

a(n) = A020639(A073734(n)). - Michael De Vlieger, Dec 10 2021

Crossrefs

Cf. A064413, A064741, A064742, A064743, A020639, A073734.

Sequence in context: A177868 A178701 A181611 * A080967 A078570 A295284

Adjacent sequences: A064737 A064738 A064739 * A064741 A064742 A064743

Keyword

nonn,easy

Author

N. J. A. Sloane, Oct 18 2001

Extensions

More terms from David Wasserman, Aug 05 2002

Status

approved