A188453 Number of (5*n)Xn binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly 5 ones in every column.
0, 0, 0, 66, 30090, 18014566, 15978843654, 20633840650794
Offset: 1
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.
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