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A201065 Number of n X n 0..6 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. 0

%I #8 May 04 2021 21:56:12

%S 7,70,514,22440,2250982,45244488,1001060834,1438433201164

%N Number of n X n 0..6 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

%C Diagonal of A201072.

%e Some solutions for n=4

%e ..0..0..2..2....0..1..1..1....0..0..3..3....0..1..1..3....0..0..3..3

%e ..1..1..4..4....0..2..2..4....0..2..3..4....0..2..4..6....0..2..4..4

%e ..1..3..5..6....3..3..4..5....1..2..5..6....1..2..4..6....1..2..5..6

%e ..3..5..5..6....5..6..6..6....1..4..5..6....3..5..5..6....1..3..5..6

%Y Cf. A201072.

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 26 2011

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Last modified April 22 18:29 EDT 2024. Contains 371906 sequences. (Running on oeis4.)