[seqfan] Re: counting matrices by column rises

[Ron Hardin]

I don't agree on a(5), getting for a(1..8)
1 3 163 271375 21855093751 128645361626874561 78785944892341703819175577 
6795588328283070704898044776213094655

instead of

1, 3, 163, 271375, 21855093749

The only check that my program is right, though, so far, is that the first 4 
terms agree (and presumably is unlikely to suddenly go wrong at 5)

I'll have to verify it and put it on a faster machine.

 rhhardin at mindspring.com
rhhardin at att.net (either)



----- Original Message ----
> From: Neil Sloane <njasloane at gmail.com>
> To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
> Sent: Sun, May 27, 2012 2:29:45 PM
> Subject: [seqfan] counting matrices by column rises
> 
> Dear SeqFans, I just discovered this interesting paper:
> Abramson, Morton;  Promislow, David. Enumeration of arrays by column rises.
> J. Combinatorial  Theory Ser. A 24 (1978), no. 2, 247--250. MR0469773 (57
> #9554),
> which led  me to add A212805 and A212806 - the latter needs more terms. Ron?
> 
> -- 
> Dear Friends, I have now retired from AT&T. New coordinates:
> 
> Neil J.  A. Sloane, President, OEIS Foundation
> 11 South Adelaide Avenue, Highland  Park, NJ 08904, USA
> Phone: 732 828 6098; home page: http://NeilSloane.com
> Email: njasloane at gmail.com
> 
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