[seqfan] Re: A019298 and interesting identity.

[David Seal]

I wrote:

> It isn't true, but something closely related looks as though it
> is. The problem is that A244879 and A244880 are mis-described. ...
> ...
> I will start editing the sequences concerned shortly.

Almost all the edits have now gone live. The sequences affected are the numbers of magic labelings with magic sum n for the prism graphs:

I X C3: A019298
I X C4: A061927
I X C5: A244297
I X C6: A292281 (new sequence)
I X C7: A244873
I X C8: A289992 (new sequence)

and for the even-k cycle-of-loops graphs (the odd-k ones being identical to those for the corresponding prism graphs):

LOOP X C4: A006325 (still in draft)
LOOP X C6: A244879
LOOP X C8: A244880

My still-in-draft edits to A006325 are just a comment about it apparently being the sequence for LOOP X C4 plus some additional crossrefs, but it's also affected by other people's edits.

Best regards,

David