id:A056268 - OEIS Search Results

Search: id:A056268

Displaying 1-1 of 1 results found.

page 1

Number of primitive (aperiodic) words of length n which contain exactly three different symbols.

+0
2

0, 0, 6, 36, 150, 534, 1806, 5760, 18144, 55830, 17100, 6, 518580, 1569750, 4732014, 14250450, 42844320, 128746950, 38661, 5376, 1160688606, 3483582660, 10454059938, 31368305694, 941180, 13006, 282378679920 (list; graph; listen)

	OFFSET	`1,3`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`sum mu(d)*A001117(n/d) where d\|n.`
	CROSSREFS	`Cf. A000244, A001117, A054718.` `Sequence in context: A061707 A056375 A018214 this_sequence A001117 A055404 A132165` `Adjacent sequences: A056265 A056266 A056267 this_sequence A056269 A056270 A056271`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

page 1

Search completed in 0.002 seconds

Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

AT&T Labs Research