[seqfan] Re: A039686 vs A147608

David Wilson davidwwilson at comcast.net
Thu Nov 22 13:54:42 CET 2012


I'll do that.

On 11/22/2012 2:51 AM, zak seidov wrote:
> Easy way is to add "leading zeros allowed" or not.
>
>
> ----- Original Message -----
>> From: T. D. Noe <noe at sspectra.com>
>> To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
>> Cc:
>> Sent: Thursday, November 22, 2012 9:09 AM
>> Subject: [seqfan] Re: A039686 vs A147608
>>
>> T his sequence has been around so long that we should not delete it.  This
>> policy extends to all sequences that have been in OEIS for a couple of
>> years.  If a sequence is wrong, just say so and give the number of the
>> correct sequence.
>>
>> Best regards,
>>
>> Tony
>>
>>
>> At 11:40 PM -0500 11/21/12, David Wilson wrote:
>>> Both A039686 and A147608 purport to be squares which are the
>>> concatenation of nonzero squares. However, A147608 has additional
>>> values, the first being a(10) = 9025.
>>>
>>> If 9025 is interpretable as the concatenation of two nonzero squares,
>>> these would have to be 9 and 025. This is not how we normally
>>> concatenate decimal numerals with values 9 and 25. I propose either kill
>>> A147608 as a corrupt duplicate of A039686, or amend its description and
>>> include the example {9025,9,025} to highlight the difference between
>>> A039686 and A147608.
>>>
>>> I have submitted a 1000-term b-file for A039686, and if A147608 is
>>> retained, I could submit a like b-file.
>>>
>>>
>>> _______________________________________________
>>>
>>> Seqfan Mailing list - http://list.seqfan.eu/
>>
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