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A223926 Number of n X n 0..2 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing 0

%I

%S 3,54,1116,21334,386495,6621074,108796955,1735753333,27144561576

%N Number of n X n 0..2 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing

%C Diagonal of A223933

%e Some solutions for n=3

%e ..2..1..1....0..1..0....0..2..1....1..0..0....0..0..0....0..0..0....0..0..0

%e ..0..2..2....1..1..2....2..2..2....0..1..0....0..0..2....0..2..2....1..0..0

%e ..0..0..2....1..2..2....2..2..2....0..1..1....1..2..2....1..1..2....1..1..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 29 2013

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Last modified January 26 22:13 EST 2023. Contains 359836 sequences. (Running on oeis4.)