1,2

Nick Hobson, Table of n, a(n) for n=1..10000

Nick Hobson, Python program for this sequence

The height of a term in A064389 = number of addition steps - number of subtraction steps to produce it.

Cf. A005132, A064289, A064389.

Sequence in context: A205122 A174863 A064289 * A276439 A282701 A095207

Adjacent sequences: A078756 A078757 A078758 * A078760 A078761 A078762

nonn

Reiner Martin (reinermartin(AT)hotmail.com), Jan 08 2003

approved