3-white

[Joe Crump]

297^3 = 26198073 = 026198073

...

(026) + (198) + (073) = 297


-----Original Message-----
From: N. J. A. Sloane [mailto:njas at research.att.com]
Sent: Thursday, November 11, 1999 11:18 AM
To: seqfan at ext.jussieu.fr
Subject: 3-white


A 3-White number is a number that you can cube, take the digits in blocks of
three, add them, and get the number back. I suppose you can generalize
n-White numbers with the nth power and in blocks of n digits.


> 45^2;
                                                     2025

> 55^2;
                                                     3025

> 99^2;
                                                     9801

> 297^3;
                                                   26198073

> 1296^3;
                                                  2176782336

> 14443^4;
                                              43514063882862001

so how does 26198073 give 297 ?

NJAS