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Triangle read by rows in which row n lists all prime factors of A337112(n) in increasing order.
1

%I #11 Sep 14 2020 00:39:18

%S 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 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 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 Triangle read by rows in which row n lists all prime factors of A337112(n) in increasing order.

%C If A337112(n) = 0, then n 0's are listed instead.

%e A337112(1) = 0.

%e A337112(2) = 2*2.

%e A337112(3) = 0*0*0.

%e A337112(4) = 2*3*3*5.

%e A337112(5) = 3*3*3*5*5.

%e A337112(6) = 2*3*3*3*3*7.

%e A337112(7) = 2*3*3*3*3*3*13.

%e A337112(8) = 2*3*3*3*3*3*3*3.

%e A337112(9) = 3*3*3*3*3*3*3*3*5.

%e A337112(10) = 3*3*3*3*3*3*3*3*3*13.

%e A337112(11) = 3*3*3*3*3*3*3*3*3*3*17.

%e A337112(12) = 3*3*3*3*3*3*3*3*3*3*3*3.

%e A337112(13) = 3*3*3*3*3*3*3*3*3*3*3*43*43.

%Y Cf. A337112 (products of rows).

%Y Cf. A337037, A337080, A337081.

%Y Cf. A056472 (all factorizations of n).

%K nonn,tabl

%O 1,2

%A _Matej Veselovac_, Aug 16 2020