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A011960 Number of ferrites M_2Y_n that repeat after 6n+10 layers. +0
1
0, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 3, 2, 3, 3, 3, 3, 4, 3, 4 (list; graph; listen)
OFFSET

1,6
REFERENCES

T. J. McLarnan, The numbers of polytypes ..., Zeits. Krist. 155, 269-291 (1981).

CROSSREFS

Adjacent sequences: A011957 A011958 A011959 this_sequence A011961 A011962 A011963

Sequence in context: A083552 A078704 A032358 this_sequence A008615 A103221 A026806

KEYWORD

nonn,easy

AUTHOR

njas

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

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