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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A008254 Coordination sequence T1 for feldspar. 0
1, 4, 10, 20, 38, 58, 80, 112, 144, 180, 226, 270, 320, 380, 436, 500, 574, 642, 720, 808, 888, 980, 1082, 1174, 1280, 1396, 1500, 1620, 1750, 1866, 2000, 2144, 2272, 2420, 2578, 2718, 2880, 3052, 3204, 3380, 3566, 3730, 3920, 4120, 4296, 4500, 4714, 4902 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

Inorganic Crystal Structure Database: Collection Code 100182.

LINKS

Table of n, a(n) for n=0..47.

FORMULA

a(3m) = 20m^2, a(3m+1) = 20m^2+14m+4, a(3m+2)=20m^2+26m+12 (m>0).

CROSSREFS

Sequence in context: A008058 A188280 A038420 * A168673 A090164 A128640

Adjacent sequences:  A008251 A008252 A008253 * A008255 A008256 A008257

KEYWORD

nonn,easy

AUTHOR

mgeorg(AT)ntu.edu.sg (Georg Thimm); R. W. Grosse-Kunstleve (rwgk(AT)cci.lbl.gov)

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified June 17 23:56 EDT 2013. Contains 226327 sequences.