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

Author

N. J. A. Sloane, Oct 18 2001

Keywords

• nonn
• easy

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

Crossrefs

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

Formula

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

Extensions

More terms from David Wasserman, Aug 05 2002