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A008254 Coordination sequence T1 for feldspar. +0
1
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; listen)
OFFSET

0,2

REFERENCES

Inorganic Crystal Structure Database: Collection Code 100182.

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: A000749 A008058 A038420 this_sequence A090164 A128640 A128641

Adjacent sequences: A008251 A008252 A008253 this_sequence A008255 A008256 A008257

KEYWORD

nonn,easy

AUTHOR

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

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.


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