A358925 Numbers whose first occurrence in Stern's diatomic series (A002487) is later than that of one of their proper multiples.

54, 2052, 4060, 23184, 54425, 109854, 121392, 126866, 249180, 317810, 323284, 330612, 363552, 384834, 416020, 476528, 512937, 537402, 537988, 544178, 558085, 601492, 739033, 743862, 785888, 832039, 930249, 982860, 984544, 1201692, 1203954, 1204276, 1207300

Offset

1,1

Comments

Equivalently, numbers m such that A020946(m) > A020946(m*k) for some k > 1.

For the first 38 terms, k = 2.

Links

Table of n, a(n) for n=1..33.

Rémy Sigrist, C program

Rémy Sigrist, C++ program

Index entries for sequences related to Stern's sequences

Example

A020946(54) = 1275, but A020946(2*54) = 1173 is smaller, so 54 belongs to this sequence.

Prog

(C) See Links section.
(C++) See Links section.

Crossrefs

Cf. A002487, A020946.

Sequence in context: A062144 A262112 A076009 * A003755 A324953 A174445

Adjacent sequences: A358922 A358923 A358924 * A358926 A358927 A358928

Keyword

nonn

Author

Rémy Sigrist, Dec 06 2022

Status

approved