OFFSET
0,11
COMMENTS
a(0) = 1 accounts for the empty sum.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..10000
Rémy Sigrist, C++ program
PROG
(C++) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, May 14 2022
STATUS
approved