A011962 Number of ferrites M_6Y_n that repeat after 6n+30 layers.

0, 2, 3, 6, 9, 19, 24, 46, 62, 96, 132, 194, 249, 354, 452, 600, 762, 986, 1212, 1544

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