A388290 Position of the even Markoff numbers 2*A388289 in A002559.

2, 6, 9, 12, 19, 22, 26, 29, 34, 39, 42, 46, 50, 53, 57, 61, 62, 67, 74, 76, 80, 85, 89, 92, 94, 102, 103, 113, 114, 120, 124, 125, 129, 135, 138, 142, 144, 148, 150, 154, 160, 161, 171, 172, 176, 178, 184, 194, 196, 199, 204, 205, 211, 212, 219, 225, 226, 230

Offset

1,1

Links

Table of n, a(n) for n=1..58.

Formula

A002559(a(n)) = 2*A388289(n), for n >= 1.

Example

A002559(a(2)) = A002559(6) = 2*A388289(2) = 2*17 = 34.

Crossrefs

Cf. A002559, A388289.

Sequence in context: A293789 A386546 A112870 * A169915 A236760 A086562

Adjacent sequences: A388287 A388288 A388289 * A388291 A388292 A388293

Keyword

nonn,easy

Author

Wolfdieter Lang, Sep 16 2025

Status

approved