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 A184020 1/8 the number of (n+1)X(n+1) 0..3 arrays with all 2X2 subblock sums the same 0
 32, 204, 1052, 5802, 29432, 159318, 829724, 4552710 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A184029 LINKS Table of n, a(n) for n=1..8. EXAMPLE Some solutions for 4X4 ..2..3..3..2....3..0..3..1....2..3..3..2....1..1..1..1....2..2..2..1 ..2..2..1..3....1..1..1..0....2..0..1..1....2..1..2..1....3..2..3..3 ..2..3..3..2....3..0..3..1....2..3..3..2....0..2..0..2....2..2..2..1 ..3..1..2..2....1..1..1..0....2..0..1..1....2..1..2..1....3..2..3..3 CROSSREFS Sequence in context: A232051 A247927 A247928 * A283336 A223023 A119286 Adjacent sequences: A184017 A184018 A184019 * A184021 A184022 A184023 KEYWORD nonn AUTHOR R. H. Hardin Jan 08 2011 STATUS approved

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Last modified June 2 00:00 EDT 2023. Contains 363078 sequences. (Running on oeis4.)