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A262589 Number of other isonemal fabrics of exact period n. 3
0, 0, 2, 0, 4, 0, 40, 0, 65, 0, 316, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

REFERENCES

B. Gruenbaum and G. C. Shephard, The geometry of fabrics, pp. 77-98 of F. C. Holroyd and R. J. Wilson, editors, Geometrical Combinatorics. Pitman, Boston, 1984.

LINKS

Table of n, a(n) for n=2..13.

FORMULA

A005441(n) = A000046(n)+A262588(n)+A262589(n).

CROSSREFS

Cf. A000046, A005441, A262588.

Sequence in context: A019219 A019139 A285774 * A019215 A326799 A112081

Adjacent sequences:  A262586 A262587 A262588 * A262590 A262591 A262592

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 21 2015

STATUS

approved

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Last modified August 25 05:06 EDT 2019. Contains 326318 sequences. (Running on oeis4.)