A122527 and A121231 (number of binary matrices)

[Richard Mathar]

start with the same numbers
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Subject: RE: A122527 and A121231 (number of binary matrices)
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Hi, dear group!

Maybe I've got difficulties understanding
http://research.att.com/~njas/sequences/A122527 "Number of 7 x n binary
Matrices".
Shouldn't this read a(n)=2^(7n)?
[http://mathworld.wolfram.com/01-Matrix.html]

I guess I do not understand  "binary matrices" in the same sense as the
author of this series does.

Could someone please enlighten me?

Cheers,
 Peter

P.S.: Sorry Richard, I can't answer any of your questions until I
understand the sequences.

P.P.S.: If this message reaches you twice, please forgive my mail client
and me! I send this via a poor webmail interface, because my Windows-Thunderbird does not use the correct SMTP-server.

#---------------
# Richard wrote:
#
# A comparison of A122527 and A121231 shows that they
# start with the same numbers
#
# http://research.att.com/~njas/sequences/?q=id:A122527|id:A121231
#
# Is this some coincidence enforced by the odd-prime dimension
# of the row count? (See also A052264) Can these numbers
# be smaller than those in A055084 for the 6xn matrices although
# the latter are counted with restrictions?
# 
# Richard