OFFSET
0,2
LINKS
Paolo Xausa, Table of n, a(n) for n = 0..11484 (rows 0..135 of the triangle, flattened).
EXAMPLE
Triangle begins:
[0] 1, 2;
[1] 1, 3;
[2] 1, 5;
[3] 1, 3, 9;
[4] 1, 17;
[5] 1, 3, 11, 33;
[6] 1, 5, 13, 65;
[7] 1, 3, 43, 129;
[8] 1, 257;
[9] 1, 3, 9, 19, 27, 57, 171, 513;
[10] 1, 5, 25, 41, 205, 1025;
...
MAPLE
T:= n-> sort([numtheory[divisors](2^n+1)[]])[]:
seq(T(n), n=0..15); # Alois P. Heinz, Oct 20 2024
MATHEMATICA
Divisors[2^Range[0, 20] + 1]
CROSSREFS
KEYWORD
AUTHOR
Paolo Xausa, Jul 02 2024
STATUS
approved