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.
%I A331642 #5 Jan 24 2020 06:54:19 %S A331642 1,541,449520,329520720,179438982360,70302503250720,19330575525676800, %T A331642 3970208270468160000,607903979228432409600,70957474321212775296000, %U A331642 6333776843022254545920000,419451089306915623845888000,20409207470176316989317120000,721332390787558700622151680000 %N A331642 Number of binary matrices with 5 columns and any number of distinct nonzero rows with n ones in every column. %C A331642 The final term a(16) = 31! corresponds to the number of ways to order the 31 possible nonzero rows. %H A331642 Andrew Howroyd, <a href="/A331642/b331642.txt">Table of n, a(n) for n = 0..16</a> %Y A331642 Column k=5 of A331567. %Y A331642 Cf. A331127. %K A331642 nonn,fini,full %O A331642 0,2 %A A331642 _Andrew Howroyd_, Jan 23 2020