[seqfan] Re: seqs whose |differences| are 1,2,3,4,...

franktaw at netscape.net franktaw at netscape.net
Fri Mar 12 04:22:02 CET 2010

Leaving aside the question of definitions, it doesn't really matter in 
this case whether we deal with the positive integers or the 
non-negative integers.  Just add or subtract 1 from every term to 
switch between them.  And since Recaman's sequence A005132 is in the 
database with the non-negative integers, that's what we should use - 
regardless of how Neil phrased the question.

Although, it might be good to add a comment/formula to A063733 noting 
the exact relationship to Recaman's sequence: a(n+1) = A005132(n)+1.

Franklin T. Adams-Watters

-----Original Message-----
From: N. J. A. Sloane <njas at research.att.com>

> NJAS's initial statement referred to "natural numbers"

To me the natural numbers are 1,2,3,4,5,...

The nonnegative integers are  0,1,2,3,4,5,...

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