A064290 First number of height n in Recamán's sequence A005132.

0, 1, 3, 6, 13, 20, 43, 62, 113, 224, 367, 494, 833, 1815, 3379, 5551, 9169, 17864, 32978, 58964, 106218, 131313, 155719, 180118, 591890, 881467, 1345004, 3012446, 5728819, 9309579, 17512700, 25641318, 52978675, 61998980, 125130665, 244636214, 280766754, 566273517, 1031389697, 2182394227, 3045423658, 3454917187

Offset

0,3

Comments

The height of a term in A005132 = number of addition steps - number of subtraction steps to reach it (see A064289). A064292 gives corresponding indices.

Links

Benjamin Chaffin, Table of n, a(n) for n = 0..5116

N. J. A. Sloane, FORTRAN program for A005132, A057167, A064227, A064228

Index entries for sequences related to Recamán's sequence

Example

A005132 begins 0, 1, 3, 6, 2, 7, 13, 20, 12, ... and these terms have heights 0, 1, 2, 3, 2, 3, 4, 5, 4, ...

Crossrefs

Cf. A005132, A064288, A064289, A064292, A064293, A064294.

Sequence in context: A147009 A361273 A318228 * A064621 A330588 A194279

Adjacent sequences: A064287 A064288 A064289 * A064291 A064292 A064293

Keyword

nonn

Author

N. J. A. Sloane, Sep 25 2001

Extensions

a(0) = 0 added by N. J. A. Sloane, May 01 2020

Status

approved