

A159483


Number of tolerance simple lattices of order n


0




OFFSET

1,7


COMMENTS

Relevant for order polynomial completeness of lattices and tame congruence theory.


REFERENCES

K.Kaarli and A.F.Pixley, Polynomial Completeness in Algebraic Systems, Chapman & Hall/CRC, 2001


LINKS

Table of n, a(n) for n=1..10.


EXAMPLE

The unique lattices of order 1 and 2 are tolerance simple. The lattices of order 3 and 4 are not. M_3 is of order 5 and is tolerance simple. M_4 is of order 6 and is tolerance simple. Then it gets complicated.


CROSSREFS

Number of lattices is A006966
Sequence in context: A321273 A322700 A167144 * A088127 A242739 A007282
Adjacent sequences: A159480 A159481 A159482 * A159484 A159485 A159486


KEYWORD

nonn


AUTHOR

Tim Boykett (tim(AT)timesup.org), Apr 14 2009


STATUS

approved



