[seqfan] Re: x(i-1) = ( x(i+1) - x(i)) mod M, period-N solutions?

[N. J. A. Sloane]

Ron, can you submit it in the format
where you read it by antidiagonals:
0  0 0  0 0 0  0 0 3 0  0 0 0 0 0  0 0 3 ... (I picked one
of the two directions arbitrarily) please?

Also the third column of the table of
high water marks should be another new entry.

If you submit those two, I will format the array itself,
0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
0   3   0   3   0   3   0   3   0   3   0   3   0   3   0   3   0   3   0
0   0   0   0   4   0   0   0   0   4   0   0   0   0   4   0   0   0   0
0   0   0   0   0   0   0   0   0   0  10   0   0   0   0   0   0   0   0
0   3   0  15   0   3   0  15   0   3   0  15   0   3   0  15   0   3   0
...
nicely and put it the example lines.

Thanks!

 Best regards
 			 Neil