|
|
A088471
|
|
Lunar product of distinct lunar prime divisors of n.
|
|
3
|
|
|
9, 9, 9, 9, 9, 9, 9, 9, 9, 90, 123456789987654321, 19, 19, 19, 19, 19, 19, 19, 19, 90, 91, 2345678998765432, 29, 29, 29, 29, 29, 29, 29, 90, 91, 92, 34567899876543, 39, 39, 39, 39, 39, 39, 90, 91, 92, 93, 456789987654, 49, 49, 49, 49, 49, 90, 91, 92
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
a(n) = Product_{p is a lunar divisor of n} p. (Each prime appears at most once in this product.)
|
|
LINKS
|
D. Applegate, M. LeBrun and N. J. A. Sloane, Dismal Arithmetic [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]
D. Applegate, M. LeBrun, N. J. A. Sloane, Dismal Arithmetic, J. Int. Seq. 14 (2011) # 11.9.8.
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|