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A337113
Triangle read by rows in which row n lists all prime factors of A337112(n) in increasing order.
1
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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 43, 43
OFFSET
1,2
COMMENTS
If A337112(n) = 0, then n 0's are listed instead.
EXAMPLE
A337112(1) = 0.
A337112(2) = 2*2.
A337112(3) = 0*0*0.
A337112(4) = 2*3*3*5.
A337112(5) = 3*3*3*5*5.
A337112(6) = 2*3*3*3*3*7.
A337112(7) = 2*3*3*3*3*3*13.
A337112(8) = 2*3*3*3*3*3*3*3.
A337112(9) = 3*3*3*3*3*3*3*3*5.
A337112(10) = 3*3*3*3*3*3*3*3*3*13.
A337112(11) = 3*3*3*3*3*3*3*3*3*3*17.
A337112(12) = 3*3*3*3*3*3*3*3*3*3*3*3.
A337112(13) = 3*3*3*3*3*3*3*3*3*3*3*43*43.
CROSSREFS
Cf. A337112 (products of rows).
Cf. A056472 (all factorizations of n).
Sequence in context: A129438 A125096 A037862 * A285244 A263148 A230819
KEYWORD
nonn,tabl
AUTHOR
Matej Veselovac, Aug 16 2020
STATUS
approved