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A201378 Number of n X n 0..1 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.

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%I A201378 #8 Jul 22 2025 16:12:27
%S A201378 2,3,19,121,7148,326650,175765510,74872992399,400292326222730,
%T A201378 1748923742658486631
%N A201378 Number of n X n 0..1 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.
%C A201378 Diagonal of A201384
%e A201378 Some solutions for n=5
%e A201378 ..0..0..0..0..1....0..0..0..1..1....0..0..0..1..1....0..0..0..0..0
%e A201378 ..0..0..1..1..0....0..0..0..1..1....0..0..1..0..0....0..1..1..1..1
%e A201378 ..0..1..1..1..0....0..0..1..0..1....0..1..0..0..0....1..0..0..0..1
%e A201378 ..1..0..0..1..1....0..1..1..0..1....0..1..1..0..1....1..0..0..0..1
%e A201378 ..1..0..1..1..0....1..0..0..1..1....1..1..1..1..1....1..0..1..1..1
%K A201378 nonn
%O A201378 1,1
%A A201378 _R. H. Hardin_ Nov 30 2011

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