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.

A331642 Number of binary matrices with 5 columns and any number of distinct nonzero rows with n ones in every column.

Original entry on oeis.org

1, 541, 449520, 329520720, 179438982360, 70302503250720, 19330575525676800, 3970208270468160000, 607903979228432409600, 70957474321212775296000, 6333776843022254545920000, 419451089306915623845888000, 20409207470176316989317120000, 721332390787558700622151680000
Offset: 0

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Author

Andrew Howroyd, Jan 23 2020

Keywords

Comments

The final term a(16) = 31! corresponds to the number of ways to order the 31 possible nonzero rows.

Crossrefs

Column k=5 of A331567.
Cf. A331127.