OFFSET
0,2
LINKS
Fausto A. C. Cariboni, Table of n, a(n) for n = 0..167, (terms up to a(100) from Peter Kagey based on Andrew Howroyd's b-file for A326489)
FORMULA
A326489(n) + 1 for n > 0.
EXAMPLE
The a(0) = 1 through a(5) = 13 subsets:
{} {} {} {} {} {}
{1} {1} {1} {1} {1}
{2} {2} {2} {2}
{3} {3} {3}
{2,3} {4} {4}
{2,3} {5}
{3,4} {2,3}
{2,5}
{3,4}
{3,5}
{4,5}
{2,3,5}
{3,4,5}
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Kagey, Sep 17 2019
STATUS
approved