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A011962 Number of ferrites M_6Y_n that repeat after 6n+30 layers. 0
0, 2, 3, 6, 9, 19, 24, 46, 62, 96, 132, 194, 249, 354, 452, 600, 762, 986, 1212, 1544 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

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

LINKS

Table of n, a(n) for n=1..20.

CROSSREFS

Sequence in context: A018679 A018741 A161704 * A060172 A193196 A319755

Adjacent sequences:  A011959 A011960 A011961 * A011963 A011964 A011965

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified July 5 20:21 EDT 2020. Contains 335473 sequences. (Running on oeis4.)