login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A005398 Number of n-step polygons on f.c.c. lattice.
(Formerly M4512)
2
8, 33, 168, 970, 6168, 42069, 301376, 2241420, 17173224, 134806948, 1079802216, 8798329080, 72748583832, 609220407150, 5158999447488 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

REFERENCES

A. J. Guttman, Polygons, Polyominoes and Polycubes, Lecture Notes in Physics Volume 775, 2009, Chapter 16.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=3..17.

M. F. Sykes et al., Lattice constant systems and graph theory, J. Math. Phys., 7 (1966), 1557-1572.

Index entries for sequences related to f.c.c. lattice

CROSSREFS

Equals A001337(n) / (2n).

Sequence in context: A297683 A220590 A001407 * A240044 A069509 A204191

Adjacent sequences:  A005395 A005396 A005397 * A005399 A005400 A005401

KEYWORD

nonn,more,nice

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Ruperto Corso, Dec 19 2011

a(15) and a(16) from Sean A. Irvine, Mar 30 2017

a(17) from Bert Dobbelaere, Jan 14 2019

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 11 15:51 EST 2019. Contains 329019 sequences. (Running on oeis4.)