[seqfan] Re: 3D version of A000938: 3-in-line inside the nXnXn cube

Ron Hardin rhhardin at att.net
Sun May 23 01:23:29 CEST 2010


full version is

Sets of 3 collinear points in an n^3 grid (offset 1)

 0 0 49 376 1858 5696 16427 36992 78204 150672 277005 463624 776494
1212208 1845911 2749568 4023608 5654976 7915497 10730616 14487706
19290352 25343011 32580752 41959412 53240624 66913605 83330712 103378086
126478048 154912111 187401568 225851120 270511328 322123745 381422856
451967826 530854896 620567899 722207584 840013612 970176512 1120435997
1285683800 1472405982 1683116880 1917410055 2172786544 2463591496
2781833968 3136265753 3525903368 3957680042 4423759344 4942882035
5508605376 6135297700 6817348096 7558681621 8352466712

I'm working on a suite for C collinear points in a n^D grid, for C,D up to 9
(if all goes well)



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



----- Original Message ----
> From: N. J. A. Sloane <njas at research.att.com>
> To: seqfan at seqfan.eu
> Sent: Sat, May 22, 2010 6:12:15 PM
> Subject: [seqfan] Re: 3D version of A000938: 3-in-line inside the nXnXn cube
> 
> I'm adding this to the OEIS - it will be 
> A157882.
Neil



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