A111155 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A111155

Smallest constant of a multiplicative bimagic square of order n.

120, 4320, 277200, 25945920, 3632428800, 670442572800, 140792940288000 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`3,1`
	COMMENTS	`Clearly this is a number k that has n^2 distinct factors multiplying to give k^n. For all the values checked so far, it is the smallest such number.`
	LINKS	`Table of n, a(n) for n=3..9.` `Christian Boyer, The smallest possible multiplicative magic squares .`
	EXAMPLE	`Examples of a 3 X 3 multiplicative bimagic square with constant 120 are` `01 12 10` `15 02 04` `08 05 03` `--------` `01 20 06` `12 02 05` `10 03 04` `--------` `01 20 06` `08 03 05` `15 02 04`
	CROSSREFS	`Sequence in context: A342073 A055360 A001807 * A283344 A223754 A174686` `Adjacent sequences: A111152 A111153 A111154 * A111156 A111157 A111158`
	KEYWORD	`nonn`
	AUTHOR	`Luke Pebody (ltp1000(AT)cam.ac.uk), Oct 20 2005`
	EXTENSIONS	`More terms from David W. Wilson, Feb 02 2006`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 5 19:03 EST 2023. Contains 367593 sequences. (Running on oeis4.)