A337113 Triangle read by rows in which row n lists all prime factors of A337112(n) in increasing order.

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.

Links

Table of n, a(n) for n=1..91.

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. A337037, A337080, A337081.

Cf. A056472 (all factorizations of n).

Sequence in context: A129438 A125096 A037862 * A285244 A263148 A230819

Adjacent sequences: A337110 A337111 A337112 * A337114 A337115 A337116

Keyword

nonn,tabl

Author

Matej Veselovac, Aug 16 2020

Status

approved