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 A319591 #13 Dec 17 2018 02:27:32 %S A319591 1,2,17,364,14595,937776,88507276,11584785137,2017129470049, %T A319591 452573312572094,127585778625167901,44275881599081757633, %U A319591 18594652294164085489646,9315786786179883210141889,5499383628157822564248546214,3784760890972848935690646794792 %N A319591 Number of nonnegative integer matrices with n columns and any number of nonzero distinct rows with every column summing to 3 up to permutation of rows. %C A319591 Also, the number of factorizations of m^3 into distinct factors where m is a product of n distinct primes. %H A319591 Andrew Howroyd, <a href="/A319591/b319591.txt">Table of n, a(n) for n = 0..100</a> %Y A319591 Row n=3 of A219585. %Y A319591 Cf. A322487. %K A319591 nonn %O A319591 0,2 %A A319591 _Andrew Howroyd_, Dec 16 2018