A011964 Number of ferrites M_{10}Y_n that repeat after 6n+50 layers.

0, 3, 5, 18, 38, 100, 198, 445, 829, 1605, 2851, 5014, 8361, 13843, 21907, 34362, 52327, 78571, 115434, 167695

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: A136131 A143546 A069066 * A123793 A196420 A199676

Adjacent sequences: A011961 A011962 A011963 * A011965 A011966 A011967

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved