OFFSET
1,2
COMMENTS
Number of factorizations of (k,k) into pairs (i,j) by prime signature.
Pairs (i,j) must satisfy i,j>=1, not both 1; (a,b)*(x,y) = (a*x,b*y).
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Christian G. Bower, Jun 03 2005
EXTENSIONS
Offset changed to 1 and a(27)-a(29) from Jinyuan Wang, Jan 17 2022
a(30)-a(39) from Amiram Eldar, Mar 04 2023
STATUS
approved