id:A123803 - OEIS Search Results

Search: id:A123803

Displaying 1-1 of 1 results found.

page 1

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1x7 which is symmetric after a rotation by 180 degrees.

+0
1

1, 2, 52, 617, 6052, 86534, 814679, 12560687 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`M. Abrahamsen and S. Eilers, Efficient counting of LEGO buildings, in preparation` `B. Durhuus and S. Eilers, On the entropy of LEGO, arXiv:math.CO/0504039`
	LINKS	`S. Eilers, LEGO counts`
	CROSSREFS	`Sequence in context: A080921 A034311 A053317 this_sequence A101930 A099882 A121293` `Adjacent sequences: A123800 A123801 A123802 this_sequence A123804 A123805 A123806`
	KEYWORD	`nonn`
	AUTHOR	`Soren Eilers (eilers(AT)math.ku.dk), Oct 29 2006`

page 1

Search completed in 0.002 seconds

Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research