Reminder: OEIS talk/party in Cambridge MA on Monday

N. J. A. Sloane njas at research.att.com
Fri Apr 27 05:59:38 CEST 2007


sequence ought to include 19 * 19 = 361, 19 * 29 = 551, and 29 * 29 = 841.
	-Andrew Plewe-
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Subject: Re: duplicate hunting, pt. 7
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No, the definition excludes 1 as a divisor, but not the number itself.  
So anything in A062679 must contain the digit 9.

1691 = 19 * 89 is the smallest number in A062679 but not in A106093.

Franklin T. Adams-Watters


-----Original Message-----
From: aplewe at sbcglobal.net

A062679 is apparently missing some terms. The definition is "Numbers 
such
that every divisor (except 1) contains the digit 9.", however it only 
lists
primes ending in 9 (making it the same sequence as A106093). I believe 
the
sequence ought to include 19 * 19 = 361, 19 * 29 = 551, and 29 * 29 = 
841.

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