[seqfan] Re: Does anyone recognise these number arrays?

[W. Edwin Clark]

http://oeis.org/A101877 is the only sequence in the OEIS that contains all
of the numbers
in the two arrays (in  any order)


On Sat, Apr 5, 2014 at 7:25 PM, Brendan McKay <Brendan.McKay at anu.edu.au>wrote:

> I have some finite arrays of numbers that I am trying to identify.
> They arise in the theory of graph reconstruction.   There is
> a whole lot of them but I can't give a general description.
>
> One example:
>
> 330
> 120 210
> 36 168 126
> 8 84 168 70
> 1 28 126 140 35
> 5 60 150 100 15
> 15 100 150 60 5
> 35 140 126 28 1
> 70 168 84 8
> 126 168 36
> 210 120
> 330
>
> Another:
>
> 210
> 84 126
> 28 112 70
> 7 63 105 35
> 1 24 90 80 15
> 5 50 100 50 5
> 15 80 90 24 1
> 35 105 63 7
> 70 112 28
> 126 84
> 210
>
> Does this ring a bell for anyone?  Can anyone guess what they are?
>
> Thanks, Brendan.
>
>
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