id:A123804 - OEIS Search Results

Search: id:A123804

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 flat, i.e. with all blocks in parallel position.

+0
1

1, 7, 109, 1877, 35243, 685817, 13719483, 279714347, 5788634457 (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	`Adjacent sequences: A123801 A123802 A123803 this_sequence A123805 A123806 A123807` `Sequence in context: A106977 A142480 A096498 this_sequence A116875 A101924 A112463`
	KEYWORD	`nonn,hard`
	AUTHOR	`Soren Eilers (eilers(AT)math.ku.dk), Oct 29 2006`

page 1

Search completed in 0.002 seconds

Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

AT&T Labs Research