cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A233066 Number of (5+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..5+1} nondecreasing.

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%I A233066 #5 Jul 23 2025 07:50:42
%S A233066 132,1933,26819,334580,3849923,41069900,410815334,3882304854,
%T A233066 34909282490,300390631126,2485871001226,19866918000644,153888527063899
%N A233066 Number of (5+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..5+1} nondecreasing.
%C A233066 Row 5 of A233062
%e A233066 Some solutions for n=4
%e A233066 ..0..0..0..0..1....0..0..0..0..1....0..0..0..1..0....0..0..0..1..0
%e A233066 ..0..0..1..0..1....0..0..0..0..1....0..0..0..1..0....0..0..0..1..0
%e A233066 ..1..0..0..1..0....0..0..1..0..0....0..0..1..0..1....0..0..1..1..0
%e A233066 ..0..1..0..1..1....1..0..0..0..1....0..1..0..1..1....0..0..0..1..1
%e A233066 ..0..0..1..1..1....0..0..0..1..1....0..0..1..1..1....0..1..0..0..1
%e A233066 ..1..1..1..1..1....0..1..1..1..1....0..1..1..1..1....0..0..1..0..1
%K A233066 nonn
%O A233066 1,1
%A A233066 _R. H. Hardin_, Dec 03 2013