id:A056269 - OEIS Search Results

Search: id:A056269

Displaying 1-1 of 1 results found.

page 1

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

+0
2

0, 0, 0, 24, 240, 1560, 8400, 40800, 186480, 818280, 3498000, 14674440, 60780720, 249393480, 1016542560, 4123132800, 16664094960, 67171179600, 270232006800, 1085569963080, 4356217672800, 17466683473800 (list; graph; listen)

	OFFSET	`1,4`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`sum mu(d)A000919(n/d) where d\|n.` `Seems to be n A056289.`
	CROSSREFS	`Cf. A000302, A000919, A054719.` `Sequence in context: A052663 A167548 A052796 this_sequence A000919 A014340 A052753` `Adjacent sequences: A056266 A056267 A056268 this_sequence A056270 A056271 A056272`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

page 1

Search completed in 0.002 seconds

Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research