OFFSET
1,3
COMMENTS
These are the numbers k such that mean of the k-th row of the triangle at A027926 is an integer.
Numbers k such that 2*k + 1 divides 2^k + k. - Thomas Ordowski, Jun 04 2024
LINKS
Robert Israel, Table of n, a(n) for n = 1..2000
EXAMPLE
MAPLE
filter:= k -> 2 &^ (k+1) - 1 mod (2*k+1) = 0:
select(filter, [$0..2*10^5]); # Robert Israel, Jan 10 2020
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Sep 01 2014
EXTENSIONS
Edited and offset changed by Robert Israel, Jan 10 2020
STATUS
approved