[seqfan] Re: A039686 vs A147608

T. D. Noe noe at sspectra.com
Thu Nov 22 08:09:52 CET 2012

This 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,


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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