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Revision History for A056337 (Underlined text is an addition; strikethrough text is a ~~deletion~~.)
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A056337

Number of primitive (aperiodic) reversible string structures with n beads using exactly three different colors.
(history; published version)

#9 by N. J. A. Sloane at Tue Aug 22 20:53:09 EDT 2017

AUTHOR

Marks R. Nester (nesterm(AT)dpi.qld.gov.au)

Marks R. Nester

Discussion
Tue Aug 22	20:53	OEIS Server: https://oeis.org/edit/global/2696

#8 by N. J. A. Sloane at Fri May 19 10:39:26 EDT 2017

REFERENCES

M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.. [See A056391 for pdf file of Chap. 2]

Discussion
Fri May 19	10:39	OEIS Server: https://oeis.org/edit/global/2652

#7 by Joerg Arndt at Mon Apr 10 05:26:36 EDT 2017

STATUS

proposed

approved

#6 by Andrew Howroyd at Mon Apr 10 00:20:27 EDT 2017

STATUS

editing

proposed

#5 by Andrew Howroyd at Mon Apr 10 00:20:23 EDT 2017

CROSSREFS

Column 3 of A276544.

STATUS

approved

editing

#4 by N. J. A. Sloane at Wed Sep 22 03:00:00 EDT 2004

KEYWORD

nonn,new

nonn

AUTHOR

Marks R. Nester (nesterm(AT)qfri1.se2.dpi.qld.gov.au)

#3 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004

NAME

PrimitiveNumber of primitive (aperiodic) reversible string structures with n beads using exactly three different colors.

KEYWORD

nonn,new

nonn

#2 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

	NAME	`Primitive (aperiodic) reversible string structures with n beads using exactly three different colourscolors.`
	COMMENTS	`A string and its reverse are considered to be equivalent. Permuting the colourscolors will not change the structure.`
	REFERENCES	`Nester, M. R. (. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	KEYWORD	`nonn,new` `nonn`
	AUTHOR	`Marks R. Nester (nesterm@(AT)qfri1.se2.dpi.qld.gov.au)`

#1 by N. J. A. Sloane at Sat Jul 22 03:00:00 EDT 2000

	NAME	`Primitive (aperiodic) reversible string structures with n beads using exactly three different colours.`
	DATA	`0, 0, 1, 4, 15, 49, 160, 498, 1544, 4715, 14356, 43420, 131145, 394990, 1188564, 3572400, 10732065, 32224216, 96733636, 290317660, 871200664, 2614083394, 7843255300, 23531731530, 70599259170, 211805771345`
	OFFSET	`1,4`
	COMMENTS	`A string and its reverse are considered to be equivalent. Permuting the colours will not change the structure.`
	REFERENCES	`Nester, M. R. (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`A056332(n)-A056331(n).`
	CROSSREFS	`Cf. A056319.`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm@qfri1.se2.dpi.qld.gov.au)`
	STATUS	`approved`

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