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 A210811 Number of (n+1)X(n+1) 0..2 symmetric matrices containing all values 0..2 with every 2X2 subblock having two or three distinct values, and new values 0..2 introduced in lower triangle row major order 1
 1, 77, 6229, 1262225, 726073329, 1209785791625, 5850732086362939, 82137353908070795417, 3347356112526068595635969, 395998823277249889265284827949, 135993026862887326817175277464490671 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS R. H. Hardin, Table of n, a(n) for n = 1..16 EXAMPLE Some solutions for n=3 ..0..0..0..2....0..1..1..0....0..0..1..2....0..1..1..2....0..1..1..0 ..0..1..0..0....1..2..0..2....0..1..0..1....1..2..0..1....1..2..0..1 ..0..0..0..1....1..0..0..1....1..0..1..1....1..0..1..0....1..0..2..1 ..2..0..1..1....0..2..1..0....2..1..1..0....2..1..0..2....0..1..1..2 CROSSREFS Sequence in context: A116319 A217962 A180837 * A107787 A099638 A046191 Adjacent sequences:  A210808 A210809 A210810 * A210812 A210813 A210814 KEYWORD nonn AUTHOR R. H. Hardin Mar 26 2012 STATUS approved

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Last modified August 9 09:43 EDT 2022. Contains 356021 sequences. (Running on oeis4.)