A280755 Numbers n such that 3n appears earlier than 2n in A280864.

65, 91, 95, 115, 119, 217, 231, 259, 299, 329, 371, 455, 511, 529, 539, 553, 623, 679, 707, 721, 749, 805, 973, 1043, 1057, 1211, 1337, 1351, 1379, 1631, 1799, 1883, 2839, 3017, 3077, 6601, 8449, 8897, 11237, 11509, 11921, 18683, 19193, 19411, 22043, 26719

Offset

1,1

Comments

Normally (at least as indicated by all the evidence so far), 2n appears earlier than 3n in A280864. The present sequence lists the exceptions.

Links

Lars Blomberg, Table of n, a(n) for n = 1..86 based on 10^7 terms of A280864

Example

A280864(114) = 195 = 3*65 appears before A280864(130) = 130 = 2*65, so 65 is a term.
A280864(178) = 285 = 3*95 appears before A280864(190) = 190 = 2*95, so 95 is a term.
It is a bit surprising that both 130 and 190 are fixed points of A280864 (cf. A280754).

Crossrefs

Cf. A280864, A280754.

Sequence in context: A336331 A160055 A250642 * A020140 A283656 A020194

Adjacent sequences: A280752 A280753 A280754 * A280756 A280757 A280758

Keyword

nonn

Author

N. J. A. Sloane, Jan 16 2017

Status

approved