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 A337113 #11 Sep 14 2020 00:39:18 %S A337113 0,2,2,0,0,0,2,3,3,5,3,3,3,5,5,2,3,3,3,3,7,2,3,3,3,3,3,13,2,3,3,3,3,3, %T A337113 3,3,3,3,3,3,3,3,3,3,5,3,3,3,3,3,3,3,3,3,13,3,3,3,3,3,3,3,3,3,3,17,3, %U A337113 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,43,43 %N A337113 Triangle read by rows in which row n lists all prime factors of A337112(n) in increasing order. %C A337113 If A337112(n) = 0, then n 0's are listed instead. %e A337113 A337112(1) = 0. %e A337113 A337112(2) = 2*2. %e A337113 A337112(3) = 0*0*0. %e A337113 A337112(4) = 2*3*3*5. %e A337113 A337112(5) = 3*3*3*5*5. %e A337113 A337112(6) = 2*3*3*3*3*7. %e A337113 A337112(7) = 2*3*3*3*3*3*13. %e A337113 A337112(8) = 2*3*3*3*3*3*3*3. %e A337113 A337112(9) = 3*3*3*3*3*3*3*3*5. %e A337113 A337112(10) = 3*3*3*3*3*3*3*3*3*13. %e A337113 A337112(11) = 3*3*3*3*3*3*3*3*3*3*17. %e A337113 A337112(12) = 3*3*3*3*3*3*3*3*3*3*3*3. %e A337113 A337112(13) = 3*3*3*3*3*3*3*3*3*3*3*43*43. %Y A337113 Cf. A337112 (products of rows). %Y A337113 Cf. A337037, A337080, A337081. %Y A337113 Cf. A056472 (all factorizations of n). %K A337113 nonn,tabl %O A337113 1,2 %A A337113 _Matej Veselovac_, Aug 16 2020