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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

Table of n, a(n) for n=1..52.

D. Applegate, C program for lunar arithmetic and number theory [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]

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.

Index entries for sequences related to dismal (or lunar) arithmetic

CROSSREFS

Cf. A088469, A088470.

Sequence in context: A291514 A106326 A245400 * A087416 A290546 A291720

Adjacent sequences:  A088468 A088469 A088470 * A088472 A088473 A088474

KEYWORD

nonn,changed

AUTHOR

David Applegate, Nov 11 2003

STATUS

approved

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Last modified September 26 17:09 EDT 2017. Contains 292533 sequences.