OFFSET
1,2
LINKS
EXAMPLE
Triangle begins:
1;
3;
4;
5, 2;
6;
7, 5;
8;
9, 6;
10, 3;
11, 7;
12;
13, 8, 7;
...
For n = 9 the divisors of 9 are [1, 3, 9]. There is only one pair of conjugate divisors: [1, 9], and the central divisor is 3, so the 9th row of the triangle is [10, 3].
For n = 12 the divisors of 12 are [1, 2, 3, 4, 6, 12]. There are three pairs of conjugate divisors, they are [1, 12], [2, 6], [3, 4], so the 12th row of the triangle is [13, 8, 7].
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Apr 21 2016
STATUS
approved