OFFSET
1,1
COMMENTS
Equivalently, the n-th row gives the row indices corresponding to 2*n + 1 in the triangle A340804.
LINKS
Stefano Spezia, Table of n, a(n) for n = 1..10175 (first 1500 rows of the triangle, flattened).
EXAMPLE
Triangle begins:
2
3
4
3 5
4 6
4 5 7
6 8
5 7 9
8 10
6 9 11
10 12
5 7 11 13
12 14
6 8 13 15
6 14 16
7 9 15 17
16 18
7 8 10 17 19
...
MATHEMATICA
Table[Union[n/Intersection[Divisors[n], Table[d, {d, Floor[(1+Sqrt[1+8n])/4]}]]+1, n/Intersection[Divisors[n], Table[d, {d, Floor[(Sqrt[1+2n]-1)/2]}]]-1], {n, 27}]//Flatten
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Stefano Spezia, Feb 21 2021
STATUS
approved