References to A210857

Number of (n+1)X(n+1) 0..2 symmetric matrices with every 2X2 subblock having two or three distinct values, and new values 0..2 introduced in lower triangle row major order
4, 94, 6400, 1265336, 726175112, 1209791788480, 5850732722422240

2 seqfan posts

Sat Jun 30 08:15:43 CEST 2012    [seqfan] Re: Likely error in A210586.
Sat Jun 30 07:04:44 CEST 2012    [seqfan] Likely error in A210586.

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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