OFFSET
1,2
COMMENTS
If the condition "d divides w" in the definition is replaced by "d<=w" then sequence A000108 (the Catalan numbers) is obtained.
LINKS
Sean A. Irvine, Java program (github)
CROSSREFS
KEYWORD
nonn
AUTHOR
John W. Layman, Apr 17 2000
EXTENSIONS
More terms from Sean A. Irvine, Feb 15 2022
STATUS
approved